Sep 26, 2025 · All flu vaccines are designed to protect against three influenza viruses (Visit Vaccine Virus Selection for this season's vaccine composition.) Everyone 6 months and older should get an …

Oct 9, 2023 · Mild cold symptoms do not impact the efficacy of the flu shot. Learn about when to postpone getting the flu shot if you have a cold.

Nov 3, 2025 · Getting the flu shot while ill could also slow your recovery as your immune system divides its resources. 2 Older adults are more likely to respond poorly to getting a flu shot while sick because …

Links to information on colds and flu. Covers at-home treatment for cold and flu symptoms, the flu vaccine, prevention of colds and flu, and medicines for the flu.

20 hours ago · What causes the flu and what causes a cold? Colds and flu are both respiratory illnesses, but are caused by different viruses.

6 days ago · Everyone 6 months and older is eligible for the flu vaccine unless they have a specified medical condition, such as an allergy to its ingredients or a previous severe reaction to the shot.

The influenza vaccine reduces your risk of getting influenza or the flu. The flu causes fever, head and body aches, coughing and a stuffy nose.

6 days ago · The infectious form of flu spreading has been nicknamed “superflu” because it is thought to be a mutated version of the influenza A (H3N2) strain dubbed “subclade K”.

Oct 24, 2025 · Flu, also called influenza, is an infection of the nose, throat and lungs, which are part of the respiratory system. The flu is caused by a virus. Most people with the flu get better on their own. …

18 hours ago · Flu symptoms 2025: This year, the flu hit earlier -- and cases have skyrocketed -- compared with previous years in Japan, Australia and the United Kingdom, key warning signs that …