The 1918 influenza pandemic (January 1918 – December 1920; colloquially known as: Spanish flu) was an unusually deadly influenza pandemic, The first of the two pandemics involving H1N1 influenza virus, it infected 500 million people around the world, including people on remote Pacific islands and in the Arctic, and resulted in the deaths of 50 to 100 million (three to five percent of the world's population), making it one of the deadliest natural disasters in human history. Some authorities speculate that such a pandemic in the future cannot be ruled out.
Thanks to modern medicine (such as flu vaccines and advanced treatments not available 100 years ago), average Americans have a way to protect their family members and themselves from getting the flu as well as surviving should they contract it. None of this helps those who choose not to get flu shots. We urge you to get your flu shots now.
There are three types of flu viruses: types A, B, and C. The Type A strains tend to be more serious and are likely to mutate into a new strain that people haven’t developed a resistance to. Type B flu viruses are less serious but most often affect young children. Type C causes illnesses similar to a cold. When it comes to flu season, researchers find that there are nearly always one or two strains of Type A and Type B virus circulating.
Trivalent is the flu vaccine we use. It protects against three strains of the flu: two A strains and one B strain. The trivalent vaccines have traditionally been the most popular and affordable flu vaccine.
Get more information:
Major Medical Clinic Family Medicine
Centers for Disease Control and Prevention