The comments from Venki Ramakrishnan come as two new peer-reviewed studies showed how wearing face coverings may help significantly reduce the spread of viruses such as COVID-19.
Ramakrishnan stressed how masks are only genuinely effective if worn by most people."If all of us wear one, we protect each other and thereby ourselves, reducing transmission," he said. Estimates vary, but it is thought around 40-60 percent of transmissions occur when carriers are pre- or asymptomatic -- that is, they may not know they are ill but are still able to infect others. One study by teams from the Universities of Pennsylvania and Cambridge analysed pregnant women admitted for delivery in New York City who were screened for COVID-19.
In pre-symptomatic individuals, studies have shown that viral droplets are emitted not only by sneezing and coughing, but also by talking and breathing, meaning mass face coverings would significantly reduce the risk of new infections.Another study published Monday in the Royal Society outlined vast discrepancies in mask-wearing rates among rich nations. In late April -- as COVID-19 raged throughout Europe -- mask-wearing uptake in Britain was around 25 percent, the study found.
پاکستان تازہ ترین خبریں, پاکستان عنوانات
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