SINGAPORE -- Rapid test kits unveiled in Singapore on Friday promise to help governments worldwide assess the true spread of the coronavirus and the extent of public immunity.
New kit raises hopes for gauging extent of immunity worldwide

The cPass test kit checks whether an individual has developed antibodies to fight the coronavirus. © Duke-NUS Medical School, Singapore's Agency for Science, Technology and Research, GenScript Biotech
SINGAPORE -- Rapid test kits unveiled in Singapore on Friday promise to help governments worldwide assess the true spread of the coronavirus and the extent of public immunity.