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Opinion
Media Causing Undue Public Anxiety about
Swine Flu
by Dr. Girish Bhaskar
What started
as an epidemic of swine flu in Mexico in March 2009 has now spread to
100 countries. The World Health Organization (WHO) has been alerting
countries for the past eight years to get prepared for a major influenza
outbreak. It seems to have finally arrived.
H1N1 virus moved from pigs and went on to infect humans, facilitated by
crowded living conditions. From Mexico it spread to the United States,
then to Europe and Asia. In the US, swine flu has so far killed 436
people and infected about 100,000 people. The situation will get worse
as winter approaches parts of the world.
India has seen 21 deaths so far and this is causing panic among the
populace. The good news is that the vast majority of the people who
contract swine flu influenza are going to recover completely after going
through a period of body aches, sore throat and fever.
If the Mexican experience is any guide, the H1N1 swine flu is sometimes
lethal in children and young adults. This seems to be the pattern in
India also. People born before 1957 appear to have some protection from
the current pandemic. In the 1918 pandemic, it is estimated that close
to 50 million people perished in different parts of the world.
In 2009, healthcare is very advanced compared to 1918. Tamiflu tablets
if taken early may minimize the severity of the disease. But if Tamiflu
is used indiscriminately, the virus will adapt and become resistant to
the drug. Governments have stockpiled millions of tablets to be used in
a major outbreak.
The influenza virus sometimes settles down in the lungs and can cause
severe respiratory distress requiring mechanical ventilatory support. Of
the 2,155 cases of viral pneumonia reported from Mexico, 821 required
hospitalization and 100 died of respiratory failure in spite of
mechanical ventilation. Not all viral pneumonia cases need ventilatory
support.
Pharmaceutical companies are racing to bring a vaccine that could be
effective against the swine flu virus. Pilot clinical studies are going
on in America. The vaccine is expected to be available to the public in
October of this year. One also needs protection against the regular flu
virus which shows up every winter. It is unlikely there will be enough
vaccine to vaccinate the entire world population. Pregnant women,
children, young adults, healthcare professionals engaged in patient
care, military personnel all should get priority.
Public need to remember that every year seasonal influenza causes 30,000
deaths in America especially the elderly with chronic lung disease,
heart disease and kidney disease. Death generally happens only when
there is severe involvement of both lungs by what is called acute lung
injury or acute respiratory distress syndrome. With modern medical
amenities, 42 percent of such cases can be saved.
Two classes of drugs are available to minimize the effects of flu on the
body. They are Tamiflu (Oseltamivir) and Relenza (Zanamivir). Recently,
Japanese scientists have successfully tested CS-8959 in a clinical
trial. This drug may be released for public use in Japan next year. This
is found to be safer and more efficacious than Tamiflu.
According to a British Medical Journal report, children under the age of
12 should not be given Tamiflu or Relenza. These drugs reduced the
length of the flu infection by only one day. More importantly these
drugs reduced the transmission of the virus only by eight percent.
The Mexican experience has also revealed the effectiveness of personal
protective equipment, to prevent the infection of health care workers.
Doctors and nurses taking care of critically ill patients should be
given N 95 masks for their safety.
So many people are dying everyday from dengue fever, malaria,
tuberculosis and various bacterial and viral infections. Yet, the media
by heightening awareness about the disease has unwittingly engendered
undue public anxiety.
(Dr. Girish Bhaskar is a lung
specialist practicing in Lake City, Florida, US. He can be contacted at
gbhas@hotmail.com)
IANS | August
14,
2009
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