Immune response induced by Omicron effectively neutralise Delta variant: ICMR study
2 years, 10 months ago

Immune response induced by Omicron effectively neutralise Delta variant: ICMR study

Deccan Chronicle  

New Delhi: An ICMR study has demonstrated that individuals infected with Omicron have significant immune response which could neutralise not only the Omicron, but also other variants of concern, including the most prevalent Delta variant. It suggests that the immune response induced by the Omicron could effectively neutralise the Delta variant, making the re-infection with Delta variant less likely, thereby displacing the Delta as dominant strain, the study said emphasising upon the need for Omicron-specific vaccine strategy. "Our study demonstrated substantial immune response in the individuals infected with Omicron. The neutralizing antibodies could effectively neutralize the Omicron and other variants of concern, including the most prevalent Delta variant," the study stated.

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History of this topic

Omicron variants evolve strategies to evade T cell immunity
1 year, 8 months ago

Omicron variants evolve strategies to evade T cell immunity

The Hindu  

Much like many other viruses that have developed strategies to evade T cell-mediated clearance by humans, SARS-CoV-2 virus too has the ability to evade the CD8 T cells. But the authors found that the Omicron subvariants had a “superior capacity” to suppress MHC I levels on the surface of the cells infected by the virus compared with the ancestral strain …

New Omicron sub-variant is mild: Doctors
2 years ago

New Omicron sub-variant is mild: Doctors

Deccan Chronicle  

HYDERABAD: The Omicron sub-variant BF.7 wave will be milder than those caused by previous variants, according to city doctors, and there is no cause to fear with people having developed strong immunity both due to the Covid vaccine and numerous variants spreading in communities. Given the threat of the new variant that is quickly spreading in China and its projected …

Omicron variant of SARS-CoV-2 can evade immunity provided by vaccines: ICMR study
2 years, 1 month ago

Omicron variant of SARS-CoV-2 can evade immunity provided by vaccines: ICMR study

The Hindu  

Omicron, a variant of SARS-CoV-2, can evade immunity provided by vaccines, states a new study published by the Indian Council of Medical Research. Titled ‘Omicron BA.2 lineage predominance in severe acute respiratory syndrome coronavirus 2 positive cases during the third wave in North India’, the study was published on November 2 in Frontiers in Medicine, a peer-reviewed open access medical …

New Omicron sub-variants: 5 ways mild Covid infections are affecting our health
2 years, 1 month ago

New Omicron sub-variants: 5 ways mild Covid infections are affecting our health

Hindustan Times  

New Omicron sub-variants are spreading across the world rapidly but the panic associated with Covid-19 is comparatively less compared to a year back considering the symptoms associated with Omicron have largely been mild. Omicron XBB the latest variant with its immune-evasive properties can dodge host's immune response and is highly infectious but it causes only mild symptoms in those vaccinated. …

CDC Recommends Updated COVID-19 Vaccine Boosters Targeting Omicron Strains
2 years, 3 months ago

CDC Recommends Updated COVID-19 Vaccine Boosters Targeting Omicron Strains

Huff Post  

LOADING ERROR LOADING New COVID-19 boosters that target today’s most common omicron strains are set to begin soon after the Centers for Disease Control and Prevention endorsed the updated shots Thursday. The decision by CDC Director Rochelle Walensky came shortly after the agency’s advisers said if enough people roll up their sleeves, the shots could blunt a winter surge. The …

How Omicron's BA.5 became a master of disguise, and what it means for COVID-19 surge
2 years, 4 months ago

How Omicron's BA.5 became a master of disguise, and what it means for COVID-19 surge

Firstpost  

BA.5 will not be the endgame. As the virus continues to circulate, this evolutionary trend will likely lead to the emergence of more transmissible variants that are capable of immune escape The omicron subvariant known as BA.5 was first detected in South Africa in February 2022 and spread rapidly throughout the world. Soon after researchers in South Africa reported the …

Novel COVID-19 vaccine offers superior protection against Omicron variants
2 years, 5 months ago

Novel COVID-19 vaccine offers superior protection against Omicron variants

Firstpost  

The vaccine, called Omnivax, increases neutralising antibody response against the BA.1 and BA.2.12.1 Omicron subvariants in pre-immunised mice 19-fold and eight-fold, respectively, compared with standard mRNA vaccines Washington: Scientists in the US have developed a new COVID-19 vaccine that offers superior immune protection against two viral subvariants of Omicron than standard mRNA shots. The vaccine, called Omnivax, increased neutralising antibody …

Yet another highly infectious Omicron variant is raising concerns in India and beyond
2 years, 5 months ago

Yet another highly infectious Omicron variant is raising concerns in India and beyond

LA Times  

The quickly changing coronavirus has spawned yet another super-contagious Omicron mutant that’s worrying scientists as it gains ground in India and pops up in numerous other countries, including the United States. “It’s still really early on for us to draw too many conclusions,” said Matthew Binnicker, director of clinical virology at the Mayo Clinic in Rochester, Minn. “But it does …

Can new Omicron subvariants evade vaccine immunity?
2 years, 5 months ago

Can new Omicron subvariants evade vaccine immunity?

Al Jazeera  

Dr Khan on why COVID cases are rising and what we know about how past infections and vaccines interact with Omicron BA.4 and BA.5. The uptick in new COVID cases and hospital admissions is thought to be driven largely by new subvariants of the Omicron variant of SARS-CoV-2, known as BA.4 and BA.5. The European Centre for Disease Prevention and …

Omicron BA.5: How dangerous is it? What protection can vaccines offer?
2 years, 6 months ago

Omicron BA.5: How dangerous is it? What protection can vaccines offer?

Hindustan Times  

Due to the global increase in coronavirus cases caused by the BA.5 subvariant, the World Health Organization currently classifies it as a "variant of concern." Germany's Robert Koch Institute, the country's national public health organization, reported on June 9 that the omicron subvariants BA.4 and BA.5 are growing faster than all other variants and concluded the two could soon be …

Children who had Covid infection or MIS-C are not protected against Omicron, claims study
2 years, 6 months ago

Children who had Covid infection or MIS-C are not protected against Omicron, claims study

India TV News  

Children who previously had Covid-19 or the inflammatory condition MIS-C, associated with the virus, are not protected against the newer Omicron variant, finds a study. But we found that antibodies produced by prior infections in children don't neutralise Omicron, meaning that unvaccinated children remain susceptible to Omicron," said Adrienne Randolph, from the Boston Children's Hospital. The researchers obtained blood samples …

The Omicron subvariant spreading across the U.S. shares an ominous trait with Delta
2 years, 6 months ago

The Omicron subvariant spreading across the U.S. shares an ominous trait with Delta

LA Times  

Coronavirus particles are seen under a microscope. A genetic trait that harks back to the pandemic’s past, known as a Delta mutation, appears to allow the virus “to escape preexisting immunity from vaccination and prior infection, especially if you were infected in the Omicron wave,” said Dr. Wesley Long, a pathologist at Houston Methodist in Texas. The Omicron subvariant gaining …

Omicron infection better at upping immunity than boosters, claims study
2 years, 7 months ago

Omicron infection better at upping immunity than boosters, claims study

India Today  

As coronavirus continues to infect people across the world, the latest trends in India show that hospitalisation rates are very low and the recovery is faster. A new study now reveals that Omicron infections produced even better immune responses than a booster shot in vaccinated people. The study conducted by vaccine maker BioNTech SE and the University of Washington reassures …

Five things to know about Omicron's XE variant
2 years, 7 months ago

Five things to know about Omicron's XE variant

India Today  

The highly virulent Omicron’s XE variant is suspected to have arrived in India, with potential cases detected in Gujarat and Maharashtra. Dr Pavithra Venkatagopalan, virologist and director, Covid task force, Rotary Club of Madras Next Gen, shares crucial facts about this sub-variant of Omicron. The disease caused by the XE variant is not as severe as by the Delta variant, …

Worth A Shot: mRNA Boosters Give More Protection against Serious Consequence of Omicron, Says Study
2 years, 7 months ago

Worth A Shot: mRNA Boosters Give More Protection against Serious Consequence of Omicron, Says Study

News 18  

As the roll-out of the Covid vaccine booster shots slowly gathers pace across the country, a new study has strengthened evidence that people who received the third dose of an mRNA vaccine are much better protected from any severe illness that could be caused by the newly-emerging strains including Omicron. The findings of the latest study published in the peer-reviewed …

Covishield Has Least Neutralizing Power against Omicron’s BA.1 Variant, Boosters Needed: NIV Study
2 years, 8 months ago

Covishield Has Least Neutralizing Power against Omicron’s BA.1 Variant, Boosters Needed: NIV Study

News 18  

Covishield recipients with no history of Covid have shown the least neutralizing power against Omicron’s BA.1 variant, a study conducted by the ICMR-National Institute of Virology have found, indicating need for booster shots. Breakthrough cases jabbed with Covishield, however, had highest neutralizing antibodies against all variants studied, than recovered and Covid-naïve vaccinated individuals,” an ICMR scientist told The Times of …

Scientists urge vigilance against Omicron subvariants
2 years, 8 months ago

Scientists urge vigilance against Omicron subvariants

China Daily  

Scientists stressed the need to inoculate the vulnerable while urging vigilance against the newly discovered Omicron subvariants, and called for more research to understand their quick transmissibility and severity. While previous studies have indicated the Omicron variant may cause milder disease, the Hong Kong study found the intrinsic severity of BA.2 may not be much lower than the ancestral strain …

Scientists urge vigilance against Omicron subvariants
2 years, 8 months ago

Scientists urge vigilance against Omicron subvariants

China Daily  

Scientists stressed the need to inoculate the vulnerable while urging vigilance against the newly discovered Omicron subvariants, and called for more research to understand their quick transmissibility and severity. While previous studies have indicated the Omicron variant may cause milder disease, the Hong Kong study found the intrinsic severity of BA.2 may not be much lower than the ancestral strain …

What do we know about \'stealth omicron\' so far?
2 years, 8 months ago

What do we know about \'stealth omicron\' so far?

Deccan Chronicle  

What do we know about “stealth omicron” so far? It was given the “stealth” nickname because it looks like the earlier delta variant on certain PCR tests, says Kristen Coleman at the University of Maryland School of Public Health. In rare cases, early research indicates BA.2 can infect people even if they’ve already had an omicron infection. COVID-19 vaccines appear …

What do we know about “stealth omicron” so far?
2 years, 8 months ago

What do we know about “stealth omicron” so far?

Associated Press  

What do we know about “stealth omicron” so far? It was given the “stealth” nickname because it looks like the earlier delta variant on certain PCR tests, says Kristen Coleman at the University of Maryland School of Public Health. In rare cases, early research indicates BA.2 can infect people even if they’ve already had an omicron infection. Health officials also …

New Covid Vaccine from Austria Could Protect Against Omicron Variant, Says Study
2 years, 8 months ago

New Covid Vaccine from Austria Could Protect Against Omicron Variant, Says Study

News 18  

A new vaccine being developed by scientists in Austria is effective against all SARS-CoV-2 variants known to date, including Omicron, even in those who have not yet built up any immunity as a result of immunization, according to the preclinical data. The antigen-based vaccine developed at MedUni Vienna targets the receptor-binding domains of the SARS-CoV-2 virus and induced a robust …

No difference in antibodies 6 months after mixing or taking same vaccine; booster dose is significant: Study
2 years, 8 months ago

No difference in antibodies 6 months after mixing or taking same vaccine; booster dose is significant: Study

India Today  

As per a research study conducted by the National Institute of Virology in Pune, there is no difference in antibody levels of someone who took two different vaccines in their first and second dose and someone who took the same vaccine in both doses, six months after vaccination. Earlier, studies had suggested that neutralising antibodies in those who were given …

China makes progress in developing vaccines against Omicron variant
2 years, 9 months ago

China makes progress in developing vaccines against Omicron variant

China Daily  

Xinhua| Updated :2022-03-21 BEIJING - Positive progress has been made in the development of monovalent and multivalent vaccines against the Omicron variants, a senior Chinese health official told a press conference on Saturday. Pre-clinical studies for some vaccines have been completed, with applications for clinical trials in progress, said Zheng Zhongwei, an official with the National Health Commission. "Studies show …

Study reveals likely reason for ‘stealth’ Omicron’s recent success
2 years, 9 months ago

Study reveals likely reason for ‘stealth’ Omicron’s recent success

LA Times  

COVID-19 vaccines are holding up against “stealth” Omicron almost as well as they do against the original version of the variant, a new study finds. It’s based on the team’s finding that the virus, whose official name is BA.2, is only slightly better than the dominant BA.1 at evading the protective effects of COVID-19 vaccines. We were really talking about …

Variants do not always evolve to become less virulent
2 years, 9 months ago

Variants do not always evolve to become less virulent

The Hindu  

In early February, World Health Organization technical lead on Covid-19, Dr Maria Van Kerkhove, cautioned that the pandemic is far from over and new variants will emerge and such variants could be more transmissible than the Omicron BA.2 variant. Even though the Omicron variant caused a large number of infections in virus-naïve people and in those who have been previously …

Covid vaccine efficacy limited against Omicron, says study
2 years, 10 months ago

Covid vaccine efficacy limited against Omicron, says study

India Today  

People who are double-vaccinated and those who have recovered from infection by previous strains of the SARS-CoV-2 virus have virtually no antibody protection against the Omicron variant, according to a study. Read: Very small blood clot risk after first AstraZeneca Covid shot, say UK studies They adapted for Omicron a test developed for the previous variants, which investigates whether the …

Op-Ed: The pandemic isn’t over. Omicron won’t be the last coronavirus variant to haunt us
2 years, 10 months ago

Op-Ed: The pandemic isn’t over. Omicron won’t be the last coronavirus variant to haunt us

LA Times  

Think back to late June 2021, when there was containment of the American COVID-19 pandemic with fewer than 12,000 new cases a day and a total of 15,000 patients in the hospital. A major surge ensued, which was followed by yet another one with the Omicron variant, peaking with nearly 160,000 people hospitalized and almost 2,700 deaths per day — …

Why Omicron sub-lineage BA.2 spreads faster than BA.1
2 years, 10 months ago

Why Omicron sub-lineage BA.2 spreads faster than BA.1

The Hindu  

February 19, 2022 06:00 pm | Updated February 23, 2022 09:00 am IST After quickly spreading to many countries and becoming the dominant strain in circulation within a very short time after Omicron was designated as a variant of concern on November 26, 2021, the Omicron sub-lineage BA.2 is now following the in the footsteps of BA.1 in many countries, …

New Covid variants complicate the question of vaccine mandates
2 years, 10 months ago

New Covid variants complicate the question of vaccine mandates

Hindustan Times  

Post-infection immunity might be a strange topic for political strife, but it touches on Covid vaccine mandates and whether those who’ve had the virus should be exempt. “But I think it’s more nuanced now, and a lot of people think natural immunity gives you a substantial level of protection.” But how much protection, compared to vaccination? “That’s not clear.” Barouch …

Next Covid-19 variant will be more infectious than Omicron, possibly deadlier, warns WHO
2 years, 10 months ago

Next Covid-19 variant will be more infectious than Omicron, possibly deadlier, warns WHO

India Today  

Even as the world limps back to normalcy with the Omicron wave subsiding, experts have warned that the next Covid-19 variant will be more transmissible, and perhaps, more deadly than its predecessors. In a recent press briefing, World Health Organization epidemiologist and technical lead on Covid-19 Dr Maria Van Kerkhove stressed that the pandemic is far from over and future …

Booster does up protection against Omicron to 68%: RIVM research
2 years, 10 months ago

Booster does up protection against Omicron to 68%: RIVM research

Dutch News  

While vaccinations or a previous coronavirus infection provide less effective protection against the Omicron variant when compared with Delta, a booster does ensure renewed protection, according to new research by public health institute RIVM. After a booster vaccination, protection against infection with Delta rose to 93% and to 68% for Omicron, the RIVM research shows. ‘International research shows that protection …

Do We Need Separate Vaccines For Omicron? Experts Weigh-in
2 years, 10 months ago

Do We Need Separate Vaccines For Omicron? Experts Weigh-in

News 18  

Coronavirus is still wreaking havoc in India and across the globe. The Covid-19 pandemic has been around for over two years, and every time a wave weakens, a new variant appears and takes over the entire world. The virus has witnessed more than 30 mutations since the original strain and the organic chemistry of Omicron differs significantly from the original …

Omicron variant: TN lifts curbs, allows schools, colleges to reopen on Feb 1, withdraws Sunday lockdown
2 years, 10 months ago

Omicron variant: TN lifts curbs, allows schools, colleges to reopen on Feb 1, withdraws Sunday lockdown

India TV News  

A new study has found the drugs behind the new pills to treat COVID-19 remain very effective against the Omicron variant of the virus in lab tests.The research has been published in the 'New England Journal of Medicine'. However, lab tests also showed that the available antibody therapies- typically given intravenously in hospitals- are substantially less effective against omicron than …

Covid-19 is less severe with Omicron than Delta, suggests US study
2 years, 10 months ago

Covid-19 is less severe with Omicron than Delta, suggests US study

Live Mint  

The Omicron variant appears to result in less severe COVID-19 than seen during previous periods of high coronavirus transmission including the Delta wave, with shorter hospital stays, less need for intensive care and fewer deaths, according to a new U.S. study. Despite the steep spike in COVID cases, the percentage of hospitalized patients admitted to intensive care units during the …

Explained: Why antibodies become ineffective against Omicron
2 years, 10 months ago

Explained: Why antibodies become ineffective against Omicron

India TV News  

The presence of a large number of mutations, and more than 30 on its spike protein makes antibodies ineffective against the Omicron variant of Covid-19, shows a study. Further, the team used a preexisting S-protein structure, one which would theoretically prevent the binding of antibodies to a virus, to assess whether or not the Omicron mutations would similarly affect the …

Current Covid vaccines may protect from severe disease caused by Omicron: Study
2 years, 11 months ago

Current Covid vaccines may protect from severe disease caused by Omicron: Study

Deccan Chronicle  

Washington: Current COVID-19 vaccines prompt the body to make effective, long-lasting T cells against SARS-CoV-2 that can recognise variants of concern, including Omicron, and protect from severe disease, a study has found. The research, published in the journal Cell, also shows that fully vaccinated people have fewer memory B cells and neutralising antibodies against the Omicron variant. "Most of the …

Why Omicron variant is less severe than Delta
2 years, 11 months ago

Why Omicron variant is less severe than Delta

India TV News  

Highlights Omicron variant of Covid is highly contagious but is known to cause less severe disease than Delta Researchers from University of Kent and Goethe-University Frankfurt, provides the first explanation Omicron variant, first detected in late November, has swiftly spread to 171 countries so far The Omicron variant of Covid is highly contagious but is known to cause less severe …

Omicron will soon replace Delta globally due to 'immunity evading potential': WHO
2 years, 11 months ago

Omicron will soon replace Delta globally due to 'immunity evading potential': WHO

India TV News  

Highlights WHO on Sunday said that the Omicron variant of Covid 19 has been identified in 171 countries. The global health body said that Omicron is soon set to replace Delta globally. In its latest technical brief, the global health body said that Omicron is soon set to replace Delta globally as a result of its immunity evading potential. "Omicron …

Indian-origin scientist among UBC researchers unveil world’s first molecular-level analysis of Omicron
2 years, 11 months ago

Indian-origin scientist among UBC researchers unveil world’s first molecular-level analysis of Omicron

The Hindu  

A team of researchers, including an Indian-origin scientist at the prestigious University of British Columbia, has become the first in the world to conduct a molecular-level structural analysis of the Omicron spike protein, which could help accelerate the development of more effective treatments against the variant. The analysis, done at near atomic resolution using a cryo-electron microscope, reveals how the …

Booster shots needed against omicron, CDC studies show
2 years, 11 months ago

Booster shots needed against omicron, CDC studies show

Associated Press  

NEW YORK — Three studies released Friday offered more evidence that COVID-19 vaccines are standing up to the omicron variant, at least among people who received booster shots. The papers echo previous research — including studies in Germany, South Africa and the U.K. — indicating available vaccines are less effective against omicron than earlier versions of the coronavirus, but also …

Sputnik V Covid vaccine shows higher Omicron-specific antibodies than Pfizer: Study
2 years, 11 months ago

Sputnik V Covid vaccine shows higher Omicron-specific antibodies than Pfizer: Study

Deccan Chronicle  

Moscow: The levels of Omicron-neutralising antibodies of people vaccinated with two doses of Russia's Sputnik V vaccine did not decline as much as of those who had Pfizer shots, according to a small study. The study found that Sputnik V vaccine demonstrates more than 2 times higher levels of virus neutralising antibodies to Omicron variant than two doses of Pfizer …

Booster shots needed against Omicron, CDC studies show
2 years, 11 months ago

Booster shots needed against Omicron, CDC studies show

LA Times  

A dose of a Pfizer COVID-19 vaccine is prepared at Lurie Children’s hospital on Nov. 5, 2021, in Chicago. Three studies released Friday offered more evidence that COVID-19 vaccines are standing up to the Omicron variant, at least among people who received booster shots. The papers echo previous research — including studies in Germany, South Africa and the U.K. — …

Omicron News Updates: Schools across Maharashtra to reopen for all classes from 24 Jan, says Varsha Gaikwad
2 years, 11 months ago

Omicron News Updates: Schools across Maharashtra to reopen for all classes from 24 Jan, says Varsha Gaikwad

Firstpost  

12:49 PM Whatsapp Facebook Twitter Omicron News LIVE Updates COVID-19 vaccine booster provides effective antibody protection against Omicron, finds Lancet study A third dose of COVID-19 vaccine increases the level of antibodies that can effectively neutralise the Omicron variant of coronavirus, according to a study published in The Lancet journal. Researchers from Francis Crick Institute and the National Institute for …

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 …

A fourth vaccine dose doesn't seem to fully stop omicron, study finds
2 years, 11 months ago

A fourth vaccine dose doesn't seem to fully stop omicron, study finds

Salon  

Besides being incredibly contagious, COVID-19's omicron variant is frightening for its vaccine-resistant properties. Hence, two weeks ago, a group of Israeli scientists studied whether the existing Pfizer-BioNTech vaccine can protect against omicron infections if patients are given four doses of vaccine, meaning a two-shot vaccine and two boosters. RELATED: Omicron's lower mortality rate may be explained by how the variant …

Omicron Scare: Does booster dose really neutralizes COVID-19's new variant?
2 years, 11 months ago

Omicron Scare: Does booster dose really neutralizes COVID-19's new variant?

India TV News  

An international team of researchers recently studied the sensitivity of Omicron to antibodies compared with the currently dominant Delta variant. In a new study supported by the European Union's Health Emergency Preparedness and Response Authority, scientists from the Institut Pasteur and the Vaccine Research Institute, in collaboration with KU Leuven, Orleans Regional Hospital, Hospital Europeen Georges Pompidou and Inserm, studied …

Omicron twice as contagious as delta; expect more worrisome variants: Scientists warn
2 years, 11 months ago

Omicron twice as contagious as delta; expect more worrisome variants: Scientists warn

India TV News  

Highlights Scientists say there’s no guarantee the sequels of omicron will cause milder illness The omicron variant has already raced across the globe like fire through dry grass The Omicron variant is least four times as contagious as the original version of the virus The Omicron variant of the novel coronavirus will not be the last version to worry the …

Explained | Is vaccination limiting Omicron’s virulence?
2 years, 11 months ago

Explained | Is vaccination limiting Omicron’s virulence?

The Hindu  

The story so far : Omicron, the latest SARS-CoV-2 variant of concern, may be pushing up COVID numbers across the world but it is also reporting a lower rate of hospitalisation and deaths compared to the previous Delta waves so far. According to WHO, the threat posed by Omicron largely depends on four key questions -- how transmissible the variant …

Say goodbye to self-isolating, WFH mandates, mass testing
2 years, 11 months ago

Say goodbye to self-isolating, WFH mandates, mass testing

Live Mint  

The balance of power between human and virus is shifting. And data from South Africa and elsewhere confirm early indications that the latest variant, while far more transmissible, is causing less severe disease — with lower levels of hospitalization, shorter hospital stays and fewer deaths. A study published Monday by London’s Imperial College, while limited by a small sample size …

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