however, "we do have evidence, from testing and modeling studies, that suggest people who are presymptomatic can definitely transmit sars-cov-2," says smith, the epidemiologist, most likely in the one to three days before they start showing symptoms, according to the who.
however, "we do have evidence, from testing and modeling studies, that suggest people who are presymptomatic can definitely transmit sars-cov-2," says smith, the epidemiologist, most likely in the one to three days before they start showing symptoms, according to the who.