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Is influenza vaccine worthwhile?
According to official Thailand statistics, a total of
30,024 people throughout the country have contracted Type A H1N1 influenza
virus this year and 50 of them have died, according to public health
permanent secretary Dr. Narong Sahamethapat.
Those are big numbers, and we should not forget the panic with the Swine Flu
(also H1N1) a few years ago. Bulletins from the WHO every day added to the
hysteria. When the label ‘pandemic level 6’ was applied, people stopped
going out of their houses!
Where the WHO let itself and us down, was that the ‘pandemic level 6’ only
referred to the contagious nature of the virus (and H1N1 is certainly highly
contagious). However, with only around 4000 deaths in the world from that
2009 Swine Flu virus, just how lethal was it, when the seasonal flu kills
36,000 people each year just in the US alone, and 200-300 people in
Thailand? Read those numbers again - 200-300 people from the seasonal flu in
Thailand! That’s from “nothing out of the ordinary” flu!
Right, what can you do about avoiding a full-blown influenza infection this
year? In one word - vaccinate! My hospital has published some of the
important facts about flu vaccination. While how well the flu vaccine works
can vary, there are still many good reasons to get a flu vaccine each year.
Quite simply, flu vaccination can keep you from getting sick from flu.
Protecting yourself from flu also protects the people around you who are
more vulnerable to serious flu illness. That’s the contagious nature again.
Flu vaccination can help protect people who are at greater risk of getting
seriously ill from flu, like older adults, people with chronic health
conditions and young children.
Flu vaccination also may make your illness milder if you do fall ill.
Flu vaccination can reduce the risk of more serious flu outcomes, like
hospitalizations and deaths.
A recent study showed that flu vaccine reduced children’s risk of
flu-related pediatric intensive care unit (PICU) admission by 74 percent
during flu seasons from 2010-2012.
One study showed that flu vaccination was associated with a 71 percent
reduction in flu-related hospitalizations among adults of all ages and a 77
percent reduction among adults 50 years of age and older during the
2011-2012 flu season.
Flu vaccination is an important preventive tool for people with chronic
health conditions. Vaccination was associated with lower rates of some
cardiac events among people with heart disease, especially among those who
had had a cardiac event in the past year. Flu vaccination also has been
shown to be associated with reduced hospitalizations among people with
diabetes (79 percent) and chronic lung disease (52 percent).
Vaccination helps protect women during pregnancy and their babies for up to
6 months after they are born. One study showed that giving flu vaccine to
pregnant women was 92 percent effective in preventing hospitalization of
infants for flu.
Other studies have shown that vaccination can reduce the risk of flu-related
hospitalizations in older adults. A study that looked at flu vaccine
effectiveness over the course of three flu seasons estimated that flu
vaccination lowered the risk of hospitalizations by 61 percent in people 50
years of age and older.
There are special vaccination instructions for children aged 6 months
through to eight years of age as some children require two doses of
influenza vaccine. Children in this age group who are getting vaccinated for
the first time, as well as some who have been vaccinated previously, will
need two doses. Your child’s health care provider can tell you whether two
doses are recommended for your child.
A 2009 H1N1-like virus wasn’t added to the seasonal vaccine until the
2010-2011 flu season. This means that children who did not get the 2009 H1N1
vaccine in 2009-2010, or a seasonal flu vaccine in 2010-2011 or later, will
not be fully protected from the 2009 H1N1 virus until they also receive two
doses of the 2013-2014 flu vaccine.
In some quarters there is resistance to influenza immunization, but to be
honest, I cannot understand why. Sure, there are risks involved with
immunization, but those risks are very, very small compared to the risks in
getting the flu.
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