Four images were released by China, including its national flag on Mars, a panorama of the landing site, the planet's dusty landscape and a selfie of the rover with the landing platform.
Air curtains are already in use in malls, restaurants and airports. They serve as a barrier against suspended pollutants, dust particles and pathogen-laden droplets of moisture.
Researchers in US use cryo-electron microscope to construct 3D map of virus protein that reveals how Covid-19 infects human lungs.
P.2 or B.220.127.116.11 variant of SARS-CoV-2, however, has so far had very less prevalence, with less than 0.5% of the viral samples detected worldwide showing this strain.
The new findings support a WHO-led research mission that concluded SARS-CoV-2 most likely spilled over to humans from animals — either directly from a bat or via another mammal.
Researchers at Guangzhou Center for Disease Control and Prevention study 2.5 hours of restaurant CCTV footage to conclude close contact transmission did not lead to outbreak.
Kawasaki usually occurs before age 5 and is more common in India & other South Asian countries. South Korea has second-highest incidence of the disease in world, after Japan.
UK study says single-dose recipients of Pfizer vaccine are likely to be less protected against 3 coronavirus variants of concern — B.1.617.2 (India), B.1.351 (South Africa) and B.1.1.7 (UK).
IIT Delhi team claimed SARS-CoV-2 had 4 'inserts' in spike protein that are similar to those in HIV, a highly unlikely occurrence in nature. Scientific community refutes these conclusions.
Research group called DRASTIC is trawling the internet, comparing notes & putting up a concerted resistance to Chinese claims, supported by WHO, that SARS-CoV-2 has natural origins.