The shortcoming could undermine efforts to use these fast and cheap tests to determine if someone can safely enter a place where people are congregating.
For Tim Loh's latest contributions to The Japan Times, see below:
Reviews by U.K. and European Union regulators finding potential links to the unusual side effects are another blow for the shot.
If messenger-RNA vaccines are the breakout medicine of the pandemic, then the tiny lipid spheres that bring them into people’s cells are the unsung heroes.
Drugmakers have said they could reset the COVID-19 shot to counter a new strain within just six weeks.
As the pandemic worsens in the U.S. and Europe, an approach that has seen success in Japan gains interest.