Prince Philip's last surviving sister dies. PRINCESS George of Hanover, the last surviving sister of Prince Philip, who had to be slowly integrated into the fringes of the Royal Family because of her German wartime connections, has died in a nursing home. She was 87.
Prevalance of Flu: Every year, 10 percent to 20 percent of Americans get sick with the flu (influenza). (Source: excerpt from Focus On The Flu: NIAID) ... In the United States, approximately 25 percent of the population has flu-associated illness annually, leading to an average of 20,000 to 40,000 deaths per year.
What To Expect. The typical flu incubation period is between 24 hours and 4 days, with the average being 2 days. What this means is that if you are exposed to the influenza virus and become infected, you will start to experience flu symptoms anywhere between 24 hours and 4 days after the exposure. Flu symptoms generally don't come on gradually.