A Science and Technology Blog
A November 30, 2021 circular from the health ministry clearly mentions that effective December 1, all passengers arriving from specified “at-risk” countries will be required to undergo an RTR-PCR test…
Now, a vaccine effectiveness study undertaken in Israel has shown that natural infection confers stronger immunity against the SARS-CoV-2 virus than even full vaccination. They found that people previously infected…
On April 24 last year, at the daily Health Ministry briefing, NITI Aayog member Dr. V.K. Paul presented a chart predicting the trend of COVID-19 cases in India. With over…
There have been instances in some countries where the virus spread has largely been under some kind of control at least for some duration. However, the emergence of highly contagious…
Since April 1, the number of daily cases has been accelerating at a rapid speed. Can it be any reason other than more infectious variants? We have to be cautious…
The first serosurvey was carried out in August-September 2020 and the six-month follow-up was carried out in end-January to February 2021. Widespread asymptomatic infection by mid-September when the daily cases…
The increase in daily cases has been very steep — from over 12,200 cases on March 1 to over 1,26,000 on April 7. The doubling time has reduced from 504…
A study that monitored 10 healthy individuals for more than 35 years revealed that reinfection with the same seasonal coronavirus occurred frequently at 12 months after infection. This suggests that the duration of protection against SARS-CoV-2 reinfection too may not be long.
Science Chronicle 