April 6, 2026

Science Chronicle

A Science and Technology Blog

April 6, 2026

Science Chronicle

A Science and Technology Blog

Coronavirus

Clinical trialCoronavirusCOVID-19Public HealthPublic health policySARS-CoV-2Vaccines

UK uses an untested strategy to rapidly but partially protect people at risk

With the virus running amok in the country and vaccines in short-supply, the U.K. is attempting an untested strategy of delaying the second dose of both AstraZeneca and Pfizer vaccine even in the absence of data from large trials. The intent is to rapidly but partially protect more individuals who are at risk.

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CoronavirusCOVID-19Public HealthSARS-CoV-2

Should India be overly worried about the new coronavirus variant?

About 33,000 passengers from the U.K. had arrived at various airports in India between November 25 and December 23. Of

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CoronavirusCOVID-19Public HealthSARS-CoV-2

New variant does not increase reinfection risk, disease severity, deaths

The new variant was first identified in Kent and Greater London in end-September. The preliminary assessment of outcomes of hospitalisation

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CoronavirusCOVID-19ImmunisationPublic HealthSARS-CoV-2Vaccines

Why a dry run for COVID vaccination is needed

This is the first time a vaccine to be administered outside the universal immunisation programme and specifically for adults is to be rolled out. Since several aspects of the COVID vaccination programme are new, the government has rightly decided to undertake a dry-run for vaccine administration.

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CoronavirusCOVID-19Herd immunityIndiaPublic HealthSARS-CoV-2

Is the first coronavirus wave coming to an end in India?

The number of daily fresh coronavirus cases has been steadily dropping from a peak of nearly 98,000 cases on September 16 to below 25,000 daily cases in the last few days with no spike seen nationally. The cases have been reducing despite the festival season, winter, large gatherings and not so good adherence to non-pharmaceutical interventions. However, the cumulative test positivity rate nationally is 6.1% as on December 23, which suggests we aren’t near the end of the first wave immediately.

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CoronavirusCOVID-19Public HealthSARS-CoV-2

N501Y mutation in SARS-CoV-2 virus causes increased infectivity, disease severity in mice

Of the many mutations found in the variant, the scientists have pointed out that the N501Y mutation increases the transmissibility

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CoronavirusCOVID-19Public HealthSARS-CoV-2

How the new coronavirus variant quickly accumulated 17 mutations

According to a preliminary report posted on December 19 by the COG-UK Consortium scientists, as of December 15, 1,623 variant

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CoronavirusCOVID-19Public HealthSARS-CoV-2Vaccines

Emergence of a new coronavirus variant raises concerns

On Saturday, the UK imposed strict restrictions in greater London and much of the southeast of England to stop the spread

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Blood pressure BPCardio vascular diseasesCoronavirusCOVID-19DiabetesPublic HealthSARS-CoV-2Vaccines

COVID-19: Ethical challenges of vaccinating people with comorbidities

Unlike in other groups, national databases of people with comorbidities are not available. However, though not comprehensive, since 2010, State

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CoronavirusCOVID-19Public HealthSARS-CoV-2Vaccines

Can COVID-19 vaccines with EUA be used at the population level?

Meanwhile, the Indian government has spelt out four high-risk groups — healthcare workers, frontline workers, those over 50 years of

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Clinical trialCoronavirusPublic HealthSARS-CoV-2Vaccines

By putting the vaccine approval on hold for want of data, DCGI has underscored its priorities

The greatly reassuring decision to seek additional safety and immunogenicity data from the Pune-based Serum Institute of India and Hyderabad’s

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Clinical trialCoronavirusCOVID-19Public HealthSARS-CoV-2Vaccines

Transparency in COVID-19 vaccine trials vital to gain public trust

Unlike Pfizer, AstraZeneca, which is carrying out the phase-3 trials of the Oxford vaccine in four countries, is yet to

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CoronavirusCOVID-19Herd immunityICMRIndiaPublic HealthSARS-CoV-2Vaccines

COVID-19: Challenges in achieving herd immunity through vaccination

But the government’s idea of vaccinating a “critical mass of people” for the purpose of breaking the virus transmission chain

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