Cases of flu are on the rise, according to a recent statement from the United States Centers for Disease Control and Prevention, and experts are warning that this year’s flu season will be worse than last. Now, a new study published in the Journal of Clinical Virology is shedding some light on exactly how cold weather and the spread of viruses are linked.
It turns out, seasonal flu outbreaks first appear each year about a week after the winter’s first cold spell—or at least that’s what happened in Sweden, over the course of three years when researchers tracked weather patterns and the prevalence of the virus.
