The Flu Vaccine Works -- But Few Give It a Shot
WebMD News Archive
Each year, scientists work to develop a vaccine aimed at the virus strain
that they anticipate will cause illness in that given year. In years when there
is a good match, the flu vaccine is as much as 90% effective in preventing the
flu in healthy adults, according to the CDC.
At least 20,000 Americans die from the flu and its complications each year;
most of the victims are over 65, according to the U.S. Department of Health and
In the U.S., the most-recent flu season began in mid-December 1999 and
peaked between Dec. 25, 1999 and Jan. 15, 2000.
And although the flu typically peaks in December through March, there have
been outbreaks during summer months, according to the new study. In fact, the
flu peaks from May to August in parts of the Southern Hemisphere.
"In the last three summers, there have been documented influenza
outbreaks among travelers," Bridges says. "When you get a whole bunch
of people together on bus tours and ships from all parts of the world, you are
bound to have respiratory illnesses."
This summer, people traveling in large groups to the tropics or to the
Southern Hemisphere -- which includes most of South America and Africa, as well
as Australia -- may be exposed to the influenza virus and should get vaccinated
if they have not already been, she says.
"People don't recognize that traveling in the summer is a potential
risk," Bridges continues. "If you haven't already got vaccinated, talk
to your doctor or a travel medicine specialist."
Flu vaccines are made in limited quantities so it may be hard to track down
a vaccine at this point in the year, Bridges says. Travel medicine specialists
still are likely to have some available, she adds.
For more information on preventing influenza while traveling, visit the
CDC's traveler's health page at http://www.cdc.gov/travel/feb99.htm
- The World Health Organization recently announced that few people between
the ages of 50 and 64 get a yearly flu shot. The CDC is changing its
recommendations to encourage more people in this younger age group to be
- At least 20,000 Americans die each year from the flu and its complications.
Most are over 65, but people with chronic illnesses and weakened immune systems
also are at high risk.
- In the U.S., flu season usually runs through the winter, reaching its peak
somewhere between December and March. But people can catch it in the summer,
too, especially if they travel.