Per CDC Key points Bacteria called Haemophilus influenzae can cause many types of infections. Some of these infections are mild, while others are serious. Despite its name, H. influenzae doesn't cause the flu. Learn about how vaccines can prevent infections from one type of H. influenzae, type b or Hib. Types H. influenzae can cause many different types of infections. These infections range from mild, like ear infections, to serious, like bloodstream infections. Serious infections The most...

Per CDC Key points Diphtheria is a serious disease caused by a toxin produced by some strains of bacteria called Corynebacterium diphtheriae. Keeping up to date with recommended vaccines is the best protection against diphtheria. Talk to a vaccine provider if you have questions about diphtheria vaccines. Risk factors Close contact Close contact with someone with diphtheria increases the risk of getting infected. Close contact with someone with diphtheria includes Living with them Being close...

Per CDC Key points Chickenpox is a highly contagious disease caused by the varicella-zoster virus (VZV). The virus spreads mainly through close contact with someone who has chickenpox. The best way to prevent chickenpox is to get the chickenpox vaccine. Signs and symptoms The classic symptom of chickenpox is a rash that turns into itchy, fluid-filled blisters that eventually turn into scabs. The rash may first show up on the chest, back, and face, before it spreads to the rest of the body. A...