As U.S approves booster shots, under 3.5% vaccinated in Africa

Of the nearly 6 billion doses administered globally, only 2% have been in Africa; about 80% have been administered in high- and upper-middle income countries. Less than 3.5% of people in Africa have been fully vaccinated so far compared with 54% of the total population in the U.S. Unkept promises of supplying vaccines to COVAX, … Continue reading As U.S approves booster shots, under 3.5% vaccinated in Africa

Can vaccination of all adults slow down the second wave?

It is very much possible to slow down the pace of virus spread by vaccinating all above 18 years. However, with vaccine shortage in many States, the number of daily vaccinations in the last week has been dipping. Since April 1 the number daily fresh cases has been accelerating rapidly with the number of cases … Continue reading Can vaccination of all adults slow down the second wave?

EMA wants warning of blood clots with low platelet count for Johnson and Johnson vaccine

On April 20, European Medicines Agency’s safety committee (PRAC) based on these eight cases “concluded that a warning about unusual blood clots with low blood platelets should be added to the product information for COVID-19 Vaccine Janssen”. Eight cases of serious, unusual blood clots associated with low levels of blood platelets, one of which was … Continue reading EMA wants warning of blood clots with low platelet count for Johnson and Johnson vaccine

How can India contain the second wave?

In a conversation I moderated, Dr. Gautam Menon, Professor of Physics and Biology at Ashoka University and Dr. Giridhara Babu, epidemiologist at the Public Health Foundation of India, Bengaluru and a member of the Karnataka COVID-19 Technical Advisory Committee discuss some possible options available to contain the second wave. Edited excerpts: After daily new COVID-19 … Continue reading How can India contain the second wave?

In a major shift, India fast-tracks restricted use approval for vaccines developed in other countries

On April 13, India permitted fast-track approval of COVID-19 vaccines developed, tested and approved outside the country. The decision has been taken to “expand the basket of vaccines for domestic use and hasten the pace and coverage” of COVID-19 vaccination. But before mass roll out of the vaccines that are developed and tested abroad can … Continue reading In a major shift, India fast-tracks restricted use approval for vaccines developed in other countries

Will adenovirus antibodies reduce the efficacy of vector vaccines?

While it is unclear if pre-existing antibodies to adenovirus vector will affect vaccine efficacy, it is possible that repeated vaccination using adenovirus-based vaccine either as a booster or as annual vaccination, if the need arises, will result in reduced efficacy due to vector immunity.