BMJ: Asymptomatic transmission of covid-19

Study of 10 million finds no asymptomatic positive cases. Post-lockdown SARS-CoV-2 nucleic acid screening in nearly ten million residents of Wuhan, China.

There’s “more or less no such thing” as an asymptomatic viral infection

WHO - ‘We don’t actually have that answer yet’ (re asymptomatic spread)


Asymptomatic spread of coronavirus is ‘very rare,’ WHO says


A study on infectivity of asymptomatic SARS-CoV-2 carriers. “All CT images showed no sign of COVID-19 infection. No severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections was detected in 455 contacts by nucleic acid test.”


Can infected people without symptoms transmit coronavirus?

Does Influenza Transmission Occur from Asymptomatic Infection or Prior to Symptom Onset?

Cambridge University finds no asymptomatic spread and 100% false positive rate