Are there clinical trial data to support a homologous vaccine booster?

While data from a homologous booster clinical trial has now become available for Covaxin, there is no supporting data from India for Covishield. Yet, Covishield makes for up to 90% of vaccines administered to adults so far in India. On January 5, five days before the roll-out of the ‘protection dose’, scientifically called a third … Continue reading Are there clinical trial data to support a homologous vaccine booster?

Conflicting signals from drug regulator, COVID-19 national task force

There have been at least three instances where the drug regulator has approved a drug or vaccine but the COVID-19 National Task Force has taken a diametrically opposite stand and not included the drug/vaccine in the national treatment protocol. But the task force was quick to accept the and include the approval given to repurposed … Continue reading Conflicting signals from drug regulator, COVID-19 national task force

Does Covaxin have WHO’s approval for use in children?

The health ministry's guidelines says Covaxin is the “only vaccine with WHO’s Emergency Use Listing (EUL) for the age-group 15-18”. This is incorrect. WHO has granted Emergency Use Listing for Covaxin for use in adults 18 years and above only. On December 25, 2021 Prime Minister Narendra Modi announced that adolescents aged 15-17 years will … Continue reading Does Covaxin have WHO’s approval for use in children?

India widens the vaccine safety net by immunising teenagers above 15 years

Covaxin was found to be safe and immunogenic in teenagers during a phase-2/3 clinical trial; only 175 adolescents aged 12 to 18 years were studied. The data of the trial, which is yet to be peer-reviewed, were posted on a preprint server on December 29. Nearly a year after the rollout of COVID-19 vaccines for … Continue reading India widens the vaccine safety net by immunising teenagers above 15 years

Two COVID-19 antivirals get FDA nod for emergency use

Paxlovid is not recommended for patients with severe kidney or liver disease, and if given to people with uncontrolled or undiagnosed HIV infection may result in HIV drug resistance. Molnupiravir is not recommended for use during pregnancy as the drug may harm the foetus. If full vaccination with any of the COVID-19 vaccines greatly reduces … Continue reading Two COVID-19 antivirals get FDA nod for emergency use

How the idea of vaccine protection changed in one year

As the virus evolved, our perception of protection conferred by vaccines changed dramatically. From the popular notions of herd immunity and vaccinating our way out of the pandemic, the discussion is now centred around booster doses and the eventuality of living with the virus. As the virus evolved, our perception of protection conferred by vaccines … Continue reading How the idea of vaccine protection changed in one year

Does the Omicron variant make a case for booster doses?

What is the major objective of a booster dose -- to protect from infection or protect from severe disease and death, who should get it first whenever it is approved, is there enough evidence recommending for their use, and should we give boosters when primary immunisation is not complete? Dr. Chandrakant Lahariya, physician epidemiologist and … Continue reading Does the Omicron variant make a case for booster doses?

Mechanism of blood clots after Oxford vaccine administration found

A study published has revealed for the first time the mechanism responsible for blood clot arising from thrombosis with thrombocytopenia syndrome (TTS) following vaccination with AstraZeneca vaccine. A multi-institutional study published on December 1 in the journal Science Advances has revealed for the first time the mechanism responsible for blood clot arising from thrombosis with … Continue reading Mechanism of blood clots after Oxford vaccine administration found

Restrictive voluntary license of COVID-19 antivirals compromises access, says Leena Menghaney

On the face of it, the agreement signed between the Medicines Patent Pool and the two pharmaceutical companies Merck and Pfizer appear to be making it easy to access COVID-19 antiviral drugs molnupiravir and Paxlovid, respectively. Yet, the voluntary license restricts the countries and population that have easy access to the antivirals. It even restricts … Continue reading Restrictive voluntary license of COVID-19 antivirals compromises access, says Leena Menghaney

Pfizer’s antiviral Paxlovid is a major advancement potentially for all coronaviruses, says Gagandeep Kang

Gagandeep Kang Besides 89% efficacy in preventing death and hospitalisation in specific groups that have high risk of progressing to severe disease when treatment is initiated within five days of symptoms showing up, Pfizer's antiviral against SARS-CoV-2 virus has been found to limit damage to lung tissue in human cells and mouse models of SARS-CoV-2. … Continue reading Pfizer’s antiviral Paxlovid is a major advancement potentially for all coronaviruses, says Gagandeep Kang