Flu viruses are more stable in cold air, and low humidity also helps the virus particles remain in the air.
That is because the viruses float in the air in little respiratory droplets, Dr.
When the air is humid, those droplets pick up water, grow larger and fall to the ground.
Does the flu virus thrive in cold weather?
Study Reveals Why Flu Thrives in Winter. A new animal study suggests that the influenza virus’ success hinges on low relative humidity and cold temperatures. Such conditions keep the virus more stable and in the air longer than warm, humid conditions, scientists said.
Why does cold and flu happen in winter?
Cold Air & Flu Virus
There is something a little bit more scientific going on. There is a theory that the influenza virus may survive better in colder, drier climates. When it’s humid outside, water droplets in the air fall to the ground. In the winter, however, it’s a lot less humid than the dog days of summer.
Why are viruses worse in winter?
1) During the winter, people spend more time indoors with the windows sealed, so they are more likely to breathe the same air as someone who has the flu and thus contract the virus (3). 3) The influenza virus may survive better in colder, drier climates, and therefore be able to infect more people (3).
How long do flu germs live on bedding?
The flu virus can live on hard objects such as telephones, computer keyboards, doorknobs, kitchen countertops or toys for up to 48 hours, Mayo Clinic officials say. Flu viruses survive less on porous surfaces, such as clothing, paper and tissue, experts say.
Is Cold air bad for a cough?
Cooler air can, however, exacerbate an existing cough. So if you have a cold or other respiratory infection – such as pneumonia or bronchitis – then being outside in the cold can make you cough. This is why most coughs seem to get worse when the temperature falls after dark.