(WFSB) – The weather in New England over the past week has been remarkable.

From record highs to snow, more spring-like weather is heading our way on Thursday.

The cold can harm our immune system.

Eyewitness News spoke to an expert about how temperature fluctuations can impact our health.

The weather can play a role in our chances of getting sick.

Viruses enter our system through our nose.

When the temperature and humidity drop in your nose, it is harder for the mucous layer to expel viruses.

Drier air prolongs the lifespan of viruses in the air, making transmission easier.

Keeping the air at 40-60% humidity and increasing the ventilation in your home, especially your bedroom, will reduce your risk of getting sick.

An air filter or humidifier is good to turn on during this time of year.

When humidity and temperatures suddenly drop like this weekend, the risk of infection and the severity of an infection increase.

“Many years of data has shown that this drop in humidity, although not necessarily maintaining low humidity, but somehow the drop itself can impact transmission as well as the severity of the influenza virus infection,” said Dr. Akiko Iwasaki, professor of immunobiology Yale School of Medicine.

Dr. Iwasaki recommended masks before the pandemic started.

In the winter, they can help keep your nose moist and warm.

Your immune system works better with a warm, moist nose.