Emergency departments in Pa. are seeing fewer patients with flu, but the number is still above average.
Health officials say Influenza Type A, the form that's hardest on older people, is still the most prevalent strain. But the proportion of Influenza Type B viruses has increased. They generally cause milder illness than Type A , but the health department says the increase in Type B viruses may mean more flu cases in people under 50.
Last week, 17 people died of flu-related illnesses in Pennsylvania. The majority were elderly.