1. Swine Flu (H1N1) Vaccine Slideshow Pictures
2. Swine Flu (H1N1) FAQ Slideshow Pictures
3. Strep or Sore Throat Slideshow Pictures

In this Article

• What is the nasal spray swine flu vaccine?
• How is the 2009 H1N1 swine flu nasal spray vaccine different from the seasonal nasal spray vaccine?
• Who can be vaccinated with the 2009 H1N1 swine flu nasal-spray flu vaccine (LAIV)?
• Can health care providers get the live attenuated influenza vaccine?
• Who should not be vaccinated with the 2009 H1N1 nasal-spray flu vaccine LAIV?
• Should the nasal-spray flu vaccine be given to patients with chronic diseases other than those specifically listed above?
• Are there any contraindications to giving breastfeeding mothers the 2009 H1N1 swine flu vaccine?
• Can pregnant women be in contact with someone who has gotten the nasal spray swine flu vaccine (LAIV)?
• Can the nasal-spray swine flu vaccine be given to patients when they are ill?
• Can people receiving the nasal-spray swine flu vaccine LAIV pass the vaccine viruses to others?
• Can contacts of people with weakened immune systems get the nasal-spray swine flu vaccine?
• What side effects are associated with the nasal-spray swine flu vaccine?
• How effective is the nasal-spray seasonal flu vaccine?
• When should the 2009 H1N1 nasal-spray flu vaccine be given?
• How many doses of nasal spray vaccine are needed?
• Can people who got the flu shot last year get the nasal-spray flu vaccine LAIV this year?
• Can the nasal-spray swine flu vaccine be given at the same time as other vaccines?
• Can the 2009 H1N1 nasal spray vaccine and the seasonal nasal spray vaccine be given at the same time to the same person?
• Can the nasal-spray swine flu vaccine be used together with influenza antiviral medications?
• If a child under the age of 9 years is getting seasonal influenza vaccine for the first time and requires 2 doses, does the same type of vaccine have to be used for both doses?
• How is the nasal-spray flu vaccine stored?
• Can health care workers who cannot receive the nasal spray vaccine (e.g., pregnant women, older adults, persons with chronic medical conditions) administer this vaccine to others?
• What personal protective equipment is recommended for health care workers who are giving the 2009 H1N1 nasal spray vaccine?
• Does the nasal spray flu vaccine contain thimerosal?
• Can the nasal spray flu vaccine give you the flu?
• Who makes the nasal spray vaccine?

What side effects are associated with the nasal-spray swine flu vaccine?

In children, side effects can include runny nose, headache, wheezing, vomiting, muscle aches, and fever. In adults, side effects can include runny nose, headache, sore throat, and cough. Fever is not a common side effect in adults receiving the nasal spray flu vaccine.

How effective is the nasal-spray seasonal flu vaccine?

In one large study among children aged 15-85 months, the seasonal nasal-spray flu vaccine reduced the chance of influenza illness by 92% compared with placebo. In a study among adults, the participants were not specifically tested for influenza. However, the study found 19% fewer severe febrile respiratory tract illnesses, 24% fewer respiratory tract illnesses with fever, 23-27% fewer days of illness, 13-28% fewer lost work days, 15-41% fewer health care provider visits, and 43-47% less use of antibiotics compared with placebo. A recent study suggested that seasonal LAIV may not be as effective as seasonal inactivated vaccine in adults, but more data are needed to confirm if one is better than the other. Both vaccines are expected to be effective against 2009 H1N1.

SOURCE: CDC; "Questions & Answers: 2009 H1N1 Nasal Spray Vaccine."