Dec 17, 2024
How winter conditions fuel the spread of respiratory viruses
Siddhartha JanaAlthough cold weather doesn't cause colds directly, it facilitates the transmission of respiratory viruses like the flu, COVID-19, and the common cold because of things like increased indoor activity and the way that temperature affects viruses.
Source: Canva
In freezing temperatures and low humidity, respiratory viruses like rhinovirus, influenza, and SARS-CoV-2 are more stable and multiply more quickly.
Source: Canva
Cold temperatures can enhance the transmissibility of influenza viruses by altering their outer membrane, making it easier for the virus to spread from person to person.
Source: Canva
Dry winter air causes water in respiratory droplets to evaporate, which makes the particles smaller and more mobile, extending the infectious life of respiratory viruses like the flu.
Source: Canva
Cold air inhalation can weaken the respiratory tract's immune system, which facilitates the spread of viruses. The air you breathe can be made warmer by wearing a scarf.
Source: Canva
Vitamin D levels drop throughout the winter months due to less sunlight, which impairs immunological function.
Source: Canva
During the winter, people spend more time indoors, which increases close contact and increases the chance of virus transmission.
Source: Canva
Maintaining proper hygiene, drinking plenty of water, exercising, eating a healthy diet, getting enough sleep, and routinely cleaning high-touch areas are all vital ways to avoid getting sick.
Source: Canva
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