Explained | How does a COVID-19 nasal vaccine work?
2 years, 3 months ago

Explained | How does a COVID-19 nasal vaccine work?

The Hindu  

The story so far: On September 6, Union Health Minister Mansukh Mandaviya tweeted that the Central Drugs Standard Control Organisation had approved Bharat Biotech’s nasal vaccine for primary immunisation against COVID-19 in the 18-plus age group for restricted use in an emergency situation. A nasal vaccine is delivered through the nose or mouth and it is expected to work on the mucosal lining, prompting an immune response at the entry points of the virus in the human body. In animal studies, the nasal vaccine prevented infection from taking hold in the body.” Emily Waltz explains in an article in Nature, that the COVID-19 vaccines currently in use do a good job of reducing disease severity and preventing hospitalisation, but don’t block mild illness or transmission that well. In the time it takes for them to journey there from the bloodstream, the virus spreads, and the infected person gets ill.” Is a nasal vaccine the best defence against COVID-19 so far?

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History of this topic

Recent breakthrough in COVID-19 vaccination: Indian Immunologicals Ltd unveils first needle-free booster vaccine
3 months, 3 weeks ago

Recent breakthrough in COVID-19 vaccination: Indian Immunologicals Ltd unveils first needle-free booster vaccine

Hindustan Times  

In a recent development, Hyderabad-based Indian Immunologicals Ltd in collaboration with Griffith University in Australia has made a significant breakthrough in COVID-19 vaccination technology. Indian Immunologicals Ltd unveils first needle-free booster vaccine “This accomplishment signifies a major step forward in our battle against COVID-19. According to the press release, the innovative vaccine sports an attenuated formulation that uses advanced codon …

Does frequently updating COVID-19 vaccines have any benefits? | Explained
10 months, 1 week ago

Does frequently updating COVID-19 vaccines have any benefits? | Explained

The Hindu  

Researchers update the composition of influenza vaccines every six months to match the strains of the virus that are circulating in the wild, so that the shots may provide protective immunity against the flu. The VE of COVID-19 vaccines varies according to the disease’s progression as well as the circulating strains. Thus, researchers worldwide rushed to revise COVID-19 vaccines that …

New COVID-19 vaccinations are coming, CDC says. The shots will likely be available this week
1 year, 3 months ago

New COVID-19 vaccinations are coming, CDC says. The shots will likely be available this week

LA Times  

Allan Fernandez, 7, middle, is vaccinated by Dr. David Bolour, left, as CDC Director Dr. Rochelle Walensky looks on in Ted Watkins Memorial Park last year. “Although hospitalization rates are currently low in some age groups, we have seen rates increase in recent weeks, and anticipate further increases as we enter respiratory virus season.” CDC Director Dr. Mandy Cohen on …

Private hospitals with advance orders to get intranasal COVID-19 shots soon
1 year, 10 months ago

Private hospitals with advance orders to get intranasal COVID-19 shots soon

The Hindu  

Union Health Minister Mansukh Mandaviya and Minister of Science and Technology Jitendra Singh launched first-of-it’s-kind intranasal COVID-19 vaccine iNCOVACC manufactured by Hyderabad-based Vaccine developer Bharat Biotech International Limited on January 26, 2023. It is the world’s first Intranasal vaccine for COVID to receive approval for the primary two-dose schedule, and as a heterologous booster dose, administered as nasal drops. The …

Bharat Biotech’s intranasal covid vaccine priced at ₹325 for govt hospitals
1 year, 11 months ago

Bharat Biotech’s intranasal covid vaccine priced at ₹325 for govt hospitals

Live Mint  

NEW DELHI: Bharat Biotech’s intranasal covid-19 vaccine--iNCOVACC --will be available for ₹325 per dose at government hospitals, and for ₹800 in private settings, the pharma major said on Tuesday. According to the company, iNCOVACC is the world’s first intranasal vaccine for covid-19 to have received approval for a primary two-dose schedule, and as a heterologous booster dose. Clinical trials were …

Nasal vaccines to roll out in private hospitals soon
2 years ago

Nasal vaccines to roll out in private hospitals soon

Hindustan Times  

A new coronavirus vaccine used as a nasal spray will only be available at private health facilities and the Co-WIN platform was set to be tweaked on Friday to allow people to immediately begin booking shots, people aware of the matter said on Friday. On Thursday, India’s technical expert committee on immunization— National Technical Advisory Group on Immunisation —recommended the …

Bharat Biotech’s nasal vaccine to be available as booster dose
2 years ago

Bharat Biotech’s nasal vaccine to be available as booster dose

The Hindu  

With the threat of COVID-19 resurfacing and India ramping up preventive health surveillance measures, Health Minister Mansukh Mandaviya said on Friday that a vaccine, which could be administered as nasal drops, would henceforth be available for public use. “We have made available a nasal vaccine, developed by Bharat Biotech, that can be used as a precaution dose. A spokesperson for …

As COVID-19 spikes in California, booster shots could make all the difference
2 years ago

As COVID-19 spikes in California, booster shots could make all the difference

LA Times  

With coronavirus cases and hospitalizations rising in Los Angeles County, officials are voicing new confidence in the effectiveness of the updated COVID-19 booster shot. New data has found that the updated COVID-19 vaccines offer “significant additional protection” against symptomatic infection in people who were previously vaccinated or boosted with the older formula. “We have seen very low uptake of the …

Covid vaccination improves effectiveness of treatment for cancer in nose-throat cavity
2 years, 1 month ago

Covid vaccination improves effectiveness of treatment for cancer in nose-throat cavity

The Independent  

Cancer drugs worked better after patients had had Covid-19 jabs, scientists have discovered. Patients with nasopharyngeal cancer – in the area from the back of the nose to the upper part of the throat – who had had a coronavirus vaccine “responded significantly better” to treatment than unvaccinated patients, according to German and Chinese experts. They were surprised when the …

High Hopes for Nasal Covid Vaccines Despite 'Disappointing' AstraZeneca Trial
2 years, 2 months ago

High Hopes for Nasal Covid Vaccines Despite 'Disappointing' AstraZeneca Trial

News 18  

Nasal vaccines could still be a powerful future weapon in the fight against Covid-19 despite “disappointing” recent trial results for an AstraZeneca spray, experts say. Eric Tartour, an immunologist at the European Hospital Georges Pompidou in Paris, said that while the AstraZeneca results “are indeed disappointing”, he did not think the news “dampens hope for nasal vaccines”. However, the vaccine …

AstraZeneca Nasal Spray Vaccine for Covid-19 Suffers Setback in Early Trial
2 years, 2 months ago

AstraZeneca Nasal Spray Vaccine for Covid-19 Suffers Setback in Early Trial

News 18  

In a major setback, AstraZeneca and the University of Oxford’s joint trial for the nasal-spray version of the Nonreplicating viral vector vaccine against Covid-19 did not yield desired protection, reported Reuters on Tuesday. The University of Oxford said, “An antibody response in the respiratory mucous membranes was seen in only a minority of participants in the trial, which was in …

Will Two ‘Made-in-India’ Vaccines Be the New Covid Boosters? News18 Decodes Differences
2 years, 3 months ago

Will Two ‘Made-in-India’ Vaccines Be the New Covid Boosters? News18 Decodes Differences

News 18  

India will soon roll out mRNA shots and intranasal vaccines, which will be available on CoWIN, and can be used as boosters against Covid-19. India’s first mRNA shot is only the third mRNA vaccine to be approved for Covid-19 in the world after Pfizer and Moderna. But mortality will be reduced.” Sharing a study of the intranasal vaccines under clinical …

What is a COVID-19 nasal vaccine?
2 years, 3 months ago

What is a COVID-19 nasal vaccine?

The Hindu  

Since the launch of its COVID-19 vaccine programme in early 2021, India has protected millions at home and abroad from the virus. The Hyderabad-based Bharat Biotech, the makers of Covaxin, has got an approval for its nasal vaccine from the Central Drugs Standard Control Organisation. It is for primary immunisation against COVID-19 in the 18-plus age group, for restricted use …

Bharat Biotech’s intra-nasal COVID vaccine gets emergency use approval
2 years, 3 months ago

Bharat Biotech’s intra-nasal COVID vaccine gets emergency use approval

The Hindu  

Bharat Biotech's ChAd36-SARS-CoV-S COVID-19 recombinant nasal vaccine has been approved by Central Drugs Standard Control Organisation for primary immunization against COVID-19 in 18+ age group for restricted use in emergencies, Health Minister Mansukh Mandaviya tweeted on Tuesday. Dr. Krishna Ella, chairman and managing director, Bharat Biotech, said: “iNCOVACC will be a global game changer in intra-nasal vaccines technology and delivery …

India's First Nasal Vaccine for Covid-19, Made by Bharat Biotech, Cleared for Emergency Use
2 years, 3 months ago

India's First Nasal Vaccine for Covid-19, Made by Bharat Biotech, Cleared for Emergency Use

News 18  

Bharat Biotech has been given an emergency use authorisation by India’s drug regulator, the Drug Controller General of India, for its intranasal Covid-19 vaccine, Union Health Minister Dr Mansukh Mandaviya tweeted on Tuesday. Big Boost to India's Fight Against COVID-19!Bharat Biotech's ChAd36-SARS-CoV-S COVID-19 recombinant nasal vaccine approved by @CDSCO_INDIA_INF for primary immunization against COVID-19 in 18+ age group for restricted …

Nasal vaccine: A futuristic intervention in immunisation drive
2 years, 4 months ago

Nasal vaccine: A futuristic intervention in immunisation drive

Firstpost  

Nasal vaccines are easier to administer, especially it would be a great relief for people who are afraid of needles and for children and the elderly population as it is non-invasive The world is slowly moving ahead of the deadly COVID-19 pandemic with the mass vaccination approach. However, recently, the nasal vaccine has been in the limelight as it can …

Bharat Biotech expects regulator’s nod for intranasal COVID-19 vaccine this month
2 years, 4 months ago

Bharat Biotech expects regulator’s nod for intranasal COVID-19 vaccine this month

The Hindu  

Bharat Biotech, which is working on an intranasal COVID-19 vaccine candidate is hopeful of getting regulatory licenses this month, if all goes well, Chairman and Managing Director of the company, Krishna Ella said. Clinical trials of nasal vaccine complete Mr. Ella said the firm completed clinical trials of the nasal vaccine with about 4,000 volunteers and there is no instance …

Nasal Sprays Will Be Essential to Tackle Covid-19 Variants, Study Says
2 years, 5 months ago

Nasal Sprays Will Be Essential to Tackle Covid-19 Variants, Study Says

News 18  

Intranasal vaccines for COVID-19 will be critical to protect people against the emerging variants of concern of the SARS-CoV-2 virus, according to a study. “Our data showed that mRNA vaccination also did not induce sufficient tissue-residing cellular immunity in the airways, another arm of our immune system to prevent the entry of the virus into our bodies,” he added. “The …

Covid nasal spray reduces viral load by 94% in 24 hours, 99% in 48 hours: Lancet Study
2 years, 5 months ago

Covid nasal spray reduces viral load by 94% in 24 hours, 99% in 48 hours: Lancet Study

India TV News  

Highlights Nasal spray administered in high-risk adult COVID-19 patients reduces viral load The phase 3 trial results have been published in Lancet Study The study on Nitric Oxide Nasal Spray was conducted by Mumbai-based pharmaceutical company Covid Nasal Spray: A nasal spray administered in high-risk adult COVID-19 patients in India reduced viral load by 94 per cent within 24 hours …

COVID-19: Nasal vaccine's phase 3 trial completed, informs Bharat Biotech chief
2 years, 6 months ago

COVID-19: Nasal vaccine's phase 3 trial completed, informs Bharat Biotech chief

Firstpost  

Dr Krishna Ella said that the company will submit its data with Drugs Controller General of India next month and If everything is okay, it will be the world’s first clinically proven nasal COVID-19 vaccine Dr Krishna Ella, Chairman and Managing Director of Bharat Biotech on Saturday said that the clinical phase III trials of the COVID-19 nasal vaccine have …

Inhaled vaccine to be more effective
2 years, 6 months ago

Inhaled vaccine to be more effective

The Hindu  

A multidisciplinary team from the McMaster University, Toronto is working to make inhaled vaccines a reality. Fiona Smaill, Professor of Pathology and Molecular Medicine, McMaster University, and a part of the multidisciplinary team, said that they are testing a next-generation COVID-19 vaccine that the earlier research in animals suggests will last longer, will be more effective and stand up well …

New oral Covid vaccine can decrease severity, transmission: Study
2 years, 7 months ago

New oral Covid vaccine can decrease severity, transmission: Study

India Today  

An investigational Covid vaccine designed to be administered orally has not only limited the degree of the disease but also decreased its airborne spread during its trial on animals, revealed a study published in the journal, Science Translational Medicine, earlier this week. The research team led by Duke University researcher Stephanie N Langel, a medical instructor in the Department of …

Nasal COVID-19 vaccine trials held at Vizag Institute
2 years, 8 months ago

Nasal COVID-19 vaccine trials held at Vizag Institute

Deccan Chronicle  

Visakhapatnam: The Visakha Institute of Medical Science hosted the third phase of the clinical trial of Covid-19 intranasal vaccine here on Saturday. VIMS is the only hospital in Andhra Pradesh among 17 locations in the country to have the trials of the Covid-19 nasal vaccine that is meant for people who have never got vaccinated so far. VIMS director Dr …

Three doses of Pfizer Covid vaccine better than two: Study
2 years, 10 months ago

Three doses of Pfizer Covid vaccine better than two: Study

Deccan Chronicle  

Washington: A third dose of the Pfizer COVID-19 vaccine conferred higher effectiveness against infection and hospitalisation than two doses of the preventive after one month, a study has found. "When we looked at the effectiveness of the two doses of Pfizer–BioNTech vaccine versus three doses, we see a benefit with three doses that exceeds that achieved with two doses alone," …

Nasal spray for adults at risk of severe Covid-19 launched
2 years, 10 months ago

Nasal spray for adults at risk of severe Covid-19 launched

Hindustan Times  

Mumbai-based pharma company Glenmark Pharmaceuticals on Wednesday announced the launch of a nasal spray for adults at high risk of severe Covid-19 after an approval from India’s drugs regulator, following clinical trials that the company said showed encouraging results. NONS has shown to reduce viral load by 94% in 24 hours in local clinical trials, the company said The product …

Vaccine protection better maintained against severe COVID-19: Lancet study
2 years, 10 months ago

Vaccine protection better maintained against severe COVID-19: Lancet study

Firstpost  

The results showed that protection against infection of any severity waned progressively following the peak which occurred a month after the second dose London: The vaccine-induced protection against SARS-CoV-2 infection wanes within a few months, but protection against severe COVID-19 appears to be better maintained, according to a study published in The Lancet journal. “The bad news is that the …

Vaccine protection better maintained against severe Covid-19: Lancet study
2 years, 10 months ago

Vaccine protection better maintained against severe Covid-19: Lancet study

India Today  

The vaccine-induced protection against SARS-CoV-2 infection wanes within a few months, but protection against severe COVID-19 appears to be better maintained, according to a study published in The Lancet journal. "The bad news is that the protection against infection seems to be diminished by seven months after the second dose of vaccine," said Peter Nordstrom, a professor at Umea University …

Vaccine protection better maintained against severe COVID-19: Lancet study
2 years, 10 months ago

Vaccine protection better maintained against severe COVID-19: Lancet study

Deccan Chronicle  

London: The vaccine-induced protection against SARS-CoV-2 infection wanes within a few months, but protection against severe COVID-19 appears to be better maintained, according to a study published in The Lancet journal. "The bad news is that the protection against infection seems to be diminished by seven months after the second dose of vaccine," said Peter Nordstrom, a professor at Umea …

Bharat Biotech gets approval for intranasal Covid-19 booster dose trials
2 years, 10 months ago

Bharat Biotech gets approval for intranasal Covid-19 booster dose trials

India TV News  

Highlights Intranasal vaccine will be administered to those who have already taken their two-dose vaccine The interval between the second dose of Covid vaccine and booster dose will be six months According to Bharat Biotech, its nasal vaccine stimulates immune responses at the site of infection The Drugs Controller General of India has granted permission to Hyderabad-based biotechnology firm Bharat …

COVID-19 vaccine booster provides effective antibody protection against Omicron, says Lancet study
2 years, 11 months ago

COVID-19 vaccine booster provides effective antibody protection against Omicron, says Lancet study

Firstpost  

COVID-19 Vaccine Booster | The study found that in people who had received the Pfizer vaccine for all three doses, antibody levels against Omicron after a third dose were similar to those previously reached against Delta after only two shots. London: A third dose of COVID-19 vaccine increases the level of antibodies that can effectively neutralise the Omicron variant of …

Prior infection, vaccines provide best protection from COVID
2 years, 11 months ago

Prior infection, vaccines provide best protection from COVID

LA Times  

A nursing home resident receives a COVID-19 booster shot. A new study that compares prior infection and vaccination concludes getting the shots is still the safest way to prevent COVID-19. A new study that compares prior infection and vaccination among people in California and New York concludes that getting the shots is still the safest way to prevent COVID-19. The …

2 Vaccine Doses, Previous Infection May Protect Against Covid for a Year: Study
2 years, 11 months ago

2 Vaccine Doses, Previous Infection May Protect Against Covid for a Year: Study

News 18  

Many wonder how much of an impact the vaccine has had on the Covid-19. According to new research, a person who has previously had Covid and has had two doses of the vaccine, will have 90 percent protection against the virus for an additional year. According to the research, the best strategy to guard against future Covid infection is to …

Bharat Biotech's nasal Covid booster dose gets DCGI approval for Phase III trial
2 years, 11 months ago

Bharat Biotech's nasal Covid booster dose gets DCGI approval for Phase III trial

India TV News  

DCGI's Subject Expert Committee has granted 'in principle' approval to Bharat Biotech for the conduct of 'Phase III superiority study and Phase III booster dose study' for its intranasal COVID vaccine and has asked it to submit protocols for approval, according to news agency ANI. According to reports, the Hyderabad-based biotechnology company had earlier proposed that its nasal vaccine can …

SEC Meet to Discuss Bharat Biotech’s Nasal Vaccine as Booster for Those Jabbed with Covishield, Covaxin
2 years, 11 months ago

SEC Meet to Discuss Bharat Biotech’s Nasal Vaccine as Booster for Those Jabbed with Covishield, Covaxin

News 18  

The Subject Expert Committee of India’s drug authority is set to meet to examine Bharat Biotech’s application for its intranasal Covid vaccine as a booster or a third dose, CNN-News18 has learnt. In its application, the company has proposed to use its intranasal vaccine BBV154 as a heterologous booster dose in already vaccinated individuals, who have received two doses of …

COVID-19 vaccines more protective than past infection, study shows
3 years, 1 month ago

COVID-19 vaccines more protective than past infection, study shows

LA Times  

A nursing student draws a COVID-19 vaccine into a syringe. A new study shows that vaccinations can offer better protection against COVID-19 than natural immunity from a prior infection. Unvaccinated people who had been infected months earlier were 5 times more likely to get COVID-19 than fully vaccinated people who didn’t have a prior infection, researchers concluded in a new …

Pfizer's COVID-19 booster shot is safe, 95.6 percent effective against virus in patients 16 years and older
3 years, 2 months ago

Pfizer's COVID-19 booster shot is safe, 95.6 percent effective against virus in patients 16 years and older

Firstpost  

Several countries have already approved Covid-19 booster shots to increase immunity in people who have already been vaccinated, but whose protection may have dipped after several months, per some studies. A booster shot of the anti-Covid-19 vaccine developed by Pfizer/BioNTech is 95.6 percent effective against symptomatic infection, according to trial data published by the makers on Thursday. The clinical phase …

People who got Covid-19 vaccines were less likely to die from any cause compared to unvaccinated people, study finds
3 years, 2 months ago

People who got Covid-19 vaccines were less likely to die from any cause compared to unvaccinated people, study finds

CNN  

CNN — People who got Covid-19 vaccines were not only less likely to die from the virus, but they were less likely to die from any cause over the following months, researchers reported Friday. That’s in addition to the mounting evidence from other studies showing that the COVID-19 vaccines are effective against COVID-19 infection, serious illness, and death.” The team …

From Merck’s Molnupiravir to Glenmark’s nasal spray, over 20 new drugs in pipeline for COVID-19
3 years, 2 months ago

From Merck’s Molnupiravir to Glenmark’s nasal spray, over 20 new drugs in pipeline for COVID-19

Firstpost  

While the market for these drugs may not be huge at present due to a drop in COVID-19 cases and extended timelines, experts believe that these drugs will help control future waves and protect people with weak immunity Merck’s Molnupiravir, Zydus’ antibody cocktail and Glenmark’s nasal spray are among more than 20 new drugs in different stages of drug trials …

COVID-19 vaccine boosters not 'appropriate' at this stage of pandemic, says study in The Lancet
3 years, 3 months ago

COVID-19 vaccine boosters not 'appropriate' at this stage of pandemic, says study in The Lancet

Firstpost  

The authors noted that across all vaccine types and variants, vaccine efficacy is greater against severe disease than against mild disease. “Taken as a whole, the currently available studies do not provide credible evidence of substantially declining protection against severe disease, which is the primary goal of vaccination,” said lead author Ana-Maria Henao-Restrepo from WHO. “The limited supply of these …

COVID-19 vaccine boosters not widely needed, say scientists
3 years, 3 months ago

COVID-19 vaccine boosters not widely needed, say scientists

Al Jazeera  

Booster doses for general population ‘are not appropriate at this stage in pandemic’, international scientists say. Additional COVID-19 vaccine booster shots are not needed for the general population, a group of international scientists has said in a new report in a medical journal. The report, published in The Lancet on Monday, concluded that even with the threat of the more …

Covid-19 booster shots not appropriate amid high vaccine efficacy: Study
3 years, 3 months ago

Covid-19 booster shots not appropriate amid high vaccine efficacy: Study

India Today  

Vaccine efficacy against severe Covid-19, even for the delta variant, is so high that booster doses for the general population are not appropriate at this stage in the pandemic, according to a review by an international group of scientists published in The Lancet on Monday. Although vaccines are less effective against asymptomatic disease or against transmission than against severe disease, …

More US studies show COVID vaccines protect from serious illness
3 years, 3 months ago

More US studies show COVID vaccines protect from serious illness

Al Jazeera  

The United States Centers for Disease Control and Prevention has presented data showing unvaccinated people are four-and-a-half times more likely to contract COVID-19 and 11 times more likely to die from it than those fully vaccinated. While protection remained strong against Delta, the study also confirmed an increase in milder COVID-19 infections among fully vaccinated people, which the authors said …

Got COVID-19 after two shots?: Four factors that increase the risk of vaccinated people getting infected – Firstpost
3 years, 3 months ago

Got COVID-19 after two shots?: Four factors that increase the risk of vaccinated people getting infected – Firstpost

Firstpost  

According to the COVID Symptom Study, the five most common symptoms of a breakthrough infection are a headache, a runny nose, sneezing, a sore throat and loss of smell Two weeks after your second COVID-19 vaccine dose, the protective effects of vaccination will be at their highest. But when facing the alpha variant, data from Public Health England suggests that …

US FDA authorises third shot of COVID-19 vaccines for the immunocompromised amid Delta surge
3 years, 4 months ago

US FDA authorises third shot of COVID-19 vaccines for the immunocompromised amid Delta surge

ABC  

The US Food and Drug Administration has authorised a third dose of COVID-19 vaccines by Pfizer and Moderna for people with compromised immune systems who are likely to have weaker protection from the two-dose regimens. Key points: Transplant recipients and others with severely weakened immune systems can get a booster jab The announcement comes amid growing concern about breakthrough infections …

First Covid nasal vaccine by Bharat Biotech gets regulators nod for phase 2, 3 trials
3 years, 4 months ago

First Covid nasal vaccine by Bharat Biotech gets regulators nod for phase 2, 3 trials

India TV News  

The first nasal vaccine against coronavirus developed by Bharat Biotech supported by Department of Biotechnology and its PSU, Biotechnology Industry Research Assistance Council has been given regulator's nod for conducting phase 2 and 3 trials, the Ministry of Science & Technology informed on Friday. "Bharat Biotech's intranasal vaccine is the first nasal vaccine that has received the regulatory approval for …

Covaxin, Covishield mixing: Cocktail vaccine safe, provides better immunity against Covid-19 variants | ICMR study
3 years, 4 months ago

Covaxin, Covishield mixing: Cocktail vaccine safe, provides better immunity against Covid-19 variants | ICMR study

India Today  

Mixing and matching of Covaxin and Covishield, the Covid-19 vaccines available in India, have shown better results in building immunity against the virus, according to a study by the Indian Council of Medical Research. The study suggests that immunisation with combination of an adenovirus vector platform-based vaccine followed by inactivated whole virus vaccine was not only safe but also gave …

Q&A on vaccine protective effects, booster shot
3 years, 4 months ago

Q&A on vaccine protective effects, booster shot

China Daily  

The National Health Commission has responded to key public concerns about COVID-19 vaccines and disease control policies amid a resurgence of novel coronavirus fueled by the Delta variant in recent weeks. Available data shows that like other vaccines, antibody levels in vaccinated people will go down as time goes by. Six months after full immunization, neutralizing antibodies in people aged …

Q&A on vaccine protective effects, booster shot
3 years, 4 months ago

Q&A on vaccine protective effects, booster shot

China Daily  

The National Health Commission has responded to key public concerns about COVID-19 vaccines and disease control policies amid a resurgence of novel coronavirus fueled by the Delta variant in recent weeks. Available data shows that like other vaccines, antibody levels in vaccinated people will go down as time goes by. Six months after full immunization, neutralizing antibodies in people aged …

Nasal Covid Vaccine Prevents Disease, Transmission in Animals: Study
3 years, 5 months ago

Nasal Covid Vaccine Prevents Disease, Transmission in Animals: Study

News 18  

A new single-dose, intranasal COVID-19 vaccine fully protects mice against lethal infection, and also blocks transmission of the SARS-CoV-2 virus in ferrets, a study has shown. “If this new COVID-19 vaccine proves effective in people, it may help block SARS-CoV-2 transmission and help control the COVID-19 pandemic,” McCray, co-leader of the study, said. “Our preclinical data show that this vaccine …

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