Coronavirus disease (COVID-19) is an infectious disease caused by a newly discovered coronavirus.
Common signs of infection include respiratory symptoms, fever, cough, shortness of breath and breathing difficulties. In more severe cases, infection can cause pneumonia, severe acute respiratory syndrome, kidney failure and even death.
Santa Claus's flying reindeer also provide assistance with pulling his sleigh. He is commonly portrayed as living at the North Pole, and laughing in a way that sounds like "ho ho ho".
Winter is the coldest season of the year in polar and temperate zones (winter does not occur in most of the tropical zone). It occurs after autumn and before spring in each year.