How long is a cold contageios for?

A cold is typically contagious for about 1 to 2 days before symptoms appear and can remain contagious for up to 5 to 7 days after symptoms start. In some cases, individuals with weakened immune systems or prolonged symptoms may be contagious for a longer period. It's important to practice good hygiene, such as handwashing and avoiding close contact with others, to prevent the spread of the virus.