Flu activity is rising in the United States. Hospital visits have increased from influenza since the holidays. Protect yourselves and your loved ones by getting a flu shot today! The A(H3N2) strain is causing most of the illnesses. Fermilab Occupational Medical Office is vaccinating against this strain. If you are full-time, part-time, term, temporary or phased retired employee, call the medical department to schedule an appointment at extension 3232.