AMSTERDAM (Reuters) - Belgian researchers on Tuesday issued a pre-holiday warning against over-reliance on COVID-19 rapid antigen tests, saying they believed the breath of people infected with the disease had high levels of virus in the first two days after an infection -- a period when many antigen tests were negative.
The organizations involved said they were communicating their findings in advance of a peer-reviewed publication in the interests of public health, as many families may be planning to use antigen tests as a way of screening for illness before family gatherings.
