The aide is in quarantine and awaiting a follow-up PCR test, a White House official said. The aide is not believed to have had close contact with President Biden.
From 8 November, foreigners have to show negative coronavirus test report before boarding a flight to the US. However, those under 18 are exempted from the vaccination requirement.
Scientists say India will continue to experience periodic flare-ups in Covid cases even though it is unlikely to see another overwhelming surge in infections.
With rising immunity from vaccinations, infections and booster shots, Covid-19 is no longer a horseman of the apocalypse but instead is gradually becoming 'just a virus'.
A better grasp of the toll is vital to assess the precise, real-world impact of vaccines and other preventative measures, or to understand just how lethal variants have been.
According to data, the prevalence of Delta exceeded 75% in India as well. The other countries were Australia, Bangladesh, China, Indonesia, Israel, UK, Russia, Singapore among others.
Most people who get better attribute their recovery to a drug, but what actually save them is their immune system which will work even better with more widespread vaccination.
Standing up to America is usually not a personal risk for a leader in India. Any suggestions of foreign pressure unites India behind who they see as leading them in that fight.
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