FROM USADAILYSTANDARD.COM

There are lots of opinions on the spread of COVID-19 and the virus load, dose, and shedding. Recently some of the leading authorities on infectious diseases has weighed in on these issues.

Prof Wendy Barclay, Action Medical Research Chair Virology, and Head of Department of Infectious Disease, Imperial College London, said:

“In general with respiratory viruses, the outcome of infection – whether you get severely ill or only get a mild cold – can sometimes be determined by how much virus actually got into your body and started the infection off. It’s all about the size of the armies on each side of the battle, a very large virus army is difficult for our immune systems army to fight off.

“So standing further away from someone when they breathe or cough out virus likely means fewer virus particles reach you and then you get infected with a lower dose and get less ill. Doctors who have to get very close to patients to take samples from them or to intubate them are at higher risk so need to wear masks.

“The fewer people in the room, the less likely it is than one person is coughing or breathing out infectious virus at any one time, so mixing with as few people as possible is the safest way.

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