World Health Organization (WHO) officials are walking back some statements from Monday, now saying that they are “absolutely convinced” that asymptomatic transmission of the novel coronavirus is occurring.
Dr. Maria van Kerkhove, an epidemiologist and the WHO’s technical lead on the coronavirus pandemic, said on Monday that many countries undertaking contact tracing had identified asymptomatic cases, but were not finding they caused further spread of the virus. “It is very rare,” she said..