…On June 7, Dr. Maria Van Kerkhove, head of the WHO’s emerging diseases and zoonosis unit, told a press conference that from the known research, asymptomatic spread was “very rare.” “From the data we have, it still seems to be rare that an asymptomatic person actually transmits onward to a secondary individual.” She added for emphasis: “It’s very rare.”
Post-lockdown SARS-CoV-2 nucleic acid screening in nearly ten million residents of Wuhan, China
…In summary, the detection rate of asymptomatic positive cases in the post-lockdown Wuhan was very low (0.303/10,000), and there was no evidence that the identified asymptomatic positive cases were infectious. These findings enabled decision makers to adjust prevention and control strategies in the post-lockdown period. Further studies are required to fully evaluate the impacts and cost-effectiveness of the citywide screening of SARS-CoV-2 infections on population’s health, health behaviours, economy, and society.
