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Category: Reinfection

Posted on December 19, 2021December 22, 2021

Is the current testing, sequencing strategy missing Omicron cases in India?

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…

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Posted on September 2, 2021

Natural immunity is superior to protection conferred by vaccination but not a safe, preferable option

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…

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Posted on August 29, 2021

India unlikely to witness a huge surge in cases in September

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…

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Posted on August 24, 2021August 24, 2021

Is the race to reach herd immunity like chasing a mirage?

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…

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Posted on April 24, 2021April 24, 2021

India will have 8-10 lakh cases a day when second wave peaks in mid-May, says Bhramar Mukherjee

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…

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Posted on April 11, 2021April 11, 2021

COVID-19: Protection against reinfection may last only for months

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…

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Posted on April 10, 2021

India will add four million more cases by May 1, says Giridhara Babu

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…

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Posted on September 20, 2020September 21, 2020

Duration of protection against SARS-CoV-2 may be short

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.

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