New data on greenhouse gas and ammonia emissions Greenhouse gas emissions have fallen slightly; ammonia emissions remain stable.
Mild 2018-2019 influenza epidemic The annual influenza epidemic in the winter of 2018-2019 was less severe than the year before. Approximately 400,000 people have had the flu.
Influenza-like Illness Incidence Is Not Reduced by Influenza Vaccination Influenza vaccination reduces the number of influenza virus infections but not the overall number of illness.