If you cough for weeks, how long are you contagious? It’s challenging to pinpoint the precise duration of contagiousness for upper respiratory diseases.
In the 24 hours before symptoms appear, individuals are probably very contagious, Strange said. Usually, this increased contagiousness lasts for a few days.
“The first three days of a cold are typically thought to be the worst for spreading, but contagiousness can last longer than that,” O’Mahony said.
According to Strange, individuals are often infectious for five to seven days. According to Braunstein, after 10 days,
Persons are thought to be no longer infectious, much as with COVID. Some people could be contagious for a longer period of time.
