What are the plans for developing 2009 H1N1 vaccine?
Vaccines are the most powerful public health tool for control of influenza, and the U.S.
government is working closely with manufacturers to take steps in the process to
manufacture a 2009 H1N1 vaccine. Working together with scientists in the public
and private sector, CDC has isolated the new H1N1 virus and modified the virus so
that it can be used to make hundreds of millions of doses of vaccine. Vaccine
manufacturers are now using these materials to begin vaccine production. Making
vaccine is a multi-step process which takes several months to complete. Candidate
vaccines will be tested in clinical trials over the few months.
When is it expected that the 2009 H1N1 vaccine will be available?
The 2009 H1N1 vaccine is expected to be available in the fall. More specific dates
cannot be provided at this time as vaccine availability depends on several factors
including manufacturing time and time needed to conduct clinical trials
Will the seasonal flu vaccine also protect against the 2009 H1N1 flu?
The seasonal flu vaccine is not expected to protect against the 2009 H1N1 flu.
Can the seasonal vaccine and the 2009 H1N1 vaccine be given at the same time?
It is anticipated that seasonal flu and 2009 H1N1 vaccines may be administered on
the same day. However, we expect the seasonal vaccine to be available earlier than
the H1N1 vaccine. The usual seasonal influenza viruses are still expected to cause
illness this fall and winter. Individuals are encouraged to get their seasonal flu vaccine
as soon as it is available.
Who will be recommended to receive the 2009 H1N1 vaccine?
CDC’s Advisory Committee on Immunization Practices (ACIP) has recommended that
certain groups of the population receive the 2009 H1N1 vaccine when it first becomes
available. These target groups include pregnant women, people who live with or care
for children younger than 6 months of age, healthcare and emergency medical services
personnel, persons between the ages of 6 months and 24 years old, and people ages
of 25 through 64 years of age who are at higher risk for 2009 H1N1 because of chronic
health disorders or compromised immune systems.
We do not expect that there will be a shortage of 2009 H1N1 vaccine, but availability
and demand can be unpredictable. There is some possibility that initially the vaccine
will be available in limited quantities. In this setting, the committee recommended that
the following groups receive the vaccine before others: pregnant women, people who
live with or care for children younger than 6 months of age, health care and emergency
medical services personnel with direct patient contact, children 6 months through 4 years
of age, and children 5 through 18 years of age who have chronic medical conditions.
The committee recognized the need to assess supply and demand issues at the local level.
The committee further recommended that once the demand for vaccine for these target
groups has been met at the local level, programs and providers should begin vaccinating
everyone from ages 25 through 64 years. Current studies indicate the risk for infection
among persons age 65 or older is less than the risk for younger age groups. Therefore,
as vaccine supply and demand for vaccine among younger age groups is being met,
programs and providers should offer vaccination to people over the age of 65.
Do those that have been previously vaccinated against the 1976 swine influenza need to get vaccinated against the 2009 H1N1 influenza?
The 1976 swine flu virus and the 2009 H1N1 virus are different enough that its unlikely a
person vaccinated in 1976 will have full protection from the 2009 H1N1. People vaccinated
in 1976 should still be given the 2009 H1N1 vaccine.
Where will the vaccine be available?
Every state is developing a vaccine delivery plan. Vaccine will be available in a combination
of settings such as vaccination clinics organized by local health departments, healthcare
provider offices, schools, and other private settings, such as pharmacies and workplaces.
For more information, see State/Jurisdiction Contact Information for Health Care Providers
Interested in Providing H1N1 Vaccine.