Winter could bring triple threat of viruses, experts say
This years winter season could bring a triple threat of viruses, including influenza.
Sydney Morning Herald
Winter is the coldest and darkest season of the year in polar and temperate climates. It occurs after autumn and before spring. The tilt of Earth's axis causes seasons; winter occurs when a hemisphere is oriented away from the Sun. Different cultures define different dates as the start of winter, and some use a definition based on weather.
This years winter season could bring a triple threat of viruses, including influenza.