The second serosurvey in Chennai, Tamil Nadu shows that one in three people in the city, who have been tested for coronavirus, was found to be positive. The Greater Chennai Corporation said on Thursday that according to the Chennai serosurvey-II, out of the 6,389 samples tested, 2,062 were positive for Covid-19 antibodies. The results have … Read more
Illustration / Peter Hamlin; LONDON: Contact tracing apps are unlikely to contain the spread of Covid-19 without proper public health control measures such as physical distancing and closure of indoor spaces, according to a review of studies. The systematic review, published in the journal Lancet Digital Health on Thursday, shows that evidence around the effectiveness … Read more
Image copyright Getty Images Falling fertility rates could mean most countries see their populations shrink by the end of the century. The world will have to begin to reckon with the consequences of a smaller, older population. 1. It could be good news for poorer countries We’re looking at very different situations in different parts … Read more