ROCHESTER, N.Y., Nov 27, 2009 /PRNewswire-USNewswire via COMTEX/ -- Preventing
disease is the goal of every health care provider and fortunately every year,
new vaccines are being added to assist in disease prevention. But do all
vaccines boost immunity for the same period of time? And, if not, when are
additional 'booster shots' needed to keep immunity strong?
In this month's issue of Pediatrics, the Journal of the American Academy of
Pediatrics, Michael Pichichero MD, Director of the Rochester General Research
Institute, based at Rochester General Hospital in Rochester NY, studies the
medical necessity for occasional booster shots to sustain immunity.
It is a well known medical fact that a booster shot for tetanus is needed every
10 years to maintain your immunity. But, what happens if you fail to get that
booster? "Fortunately, a patient has a window of opportunity to get a booster
shot even after getting a dirty wound," said Dr. Pichichero. "In this case, the
booster shot will take hold before the tetanus infection can establish itself.
The problem is that this scenario is not true for all diseases."
In his published study, Dr. Pichichero, an international authority on vaccines
and vaccine-induced memory, discusses the effectiveness of booster vaccinations
and disease progression. "We found that for slow moving infections like
hepatitis, immune memory is activated within plenty of time to prevent the
disease after a person has been vaccinated and booster vaccines are not needed"
said Dr. Pichichero. "Other examples of vaccines that do not appear to require
boosters because the pace of disease progression is slow include: polio,
measles, mumps, and German measles."
Dr. Pichichero Study
The study found, however, that there are several newer vaccines that may require
booster shots to remain effective during a lifetime, including vaccines for
diphtheria, all three types of spinal meningitis caused by bacteria, and the new
vaccine to prevent cervical cancer. "Booster shots are needed in these cases
because the disease progression is too fast for the memory response to occur in
time," said Dr. Pichichero.
The study offers several important findings. "Pediatricians and family doctors
must begin to anticipate the need to provide booster vaccinations for several of
the newer vaccines introduced in recent years," said Dr. Pichichero. "And,
public health agencies, such as the Centers for Disease Control, must begin to
consider the cost of booster shots as they calculate the cost-benefit of
vaccines. Up to now, cost calculations for the introduction and public payment
of meningitis vaccines and the cervical cancer vaccine have not included the
need (and cost) of periodic boosters, nor the consequences of missed boosters
with disease development later in life."
While the article has a strong and clear scientific basis, Dr. Pichichero
acknowledges that only continued monitoring will determine whether he is correct
in his assessment of the need for booster shots for certain diseases. "We do not
want to face a diphtheria epidemic in the U.S. as occurred in Russia a decade
ago due to lack of boostering of adults," said Dr. Pichichero.
Dr. Pichichero was a member of the discovery team of the first bacterial spinal
meningitis vaccine against Haemophilus influenzae type b, commonly called Hib;
and participated in the foundational studies of the second spinal meningitis
vaccine against pneumococci called Prevnar; and the third spinal meningitis
vaccine against meningococcus called Menactra. He was an early champion for the
introduction of safer whooping cough vaccines, called acellular vaccines. He has
ongoing support from the National Institutes of Health to study the prospects of
an ear, sinus and bronchitis vaccine. He has also received financial support for
his research from vaccine companies including GlaxoSmithKline, MedImmune,
Sanofipasteur and Wyeth (now Pfizer).
Rochester General Health System (RGHS) has been serving the community of Greater
Rochester and beyond for more than 160 years and has earned national recognition
for excellence in a variety of clinical specialties. Rochester General Hospital,
the flagship of the system, is a 528-bed tertiary care facility that treats more
Monroe County patients than any other hospital in the area. It is the fourth
largest cardiac center in New York State and has been recognized as one of the
nation's 100 Top Cardiovascular Hospitals eight times. RGHS also includes
Newark-Wayne Community Hospital, a 120-bed facility primarily serving Wayne
County; two long-term care facilities - Hill Haven and DeMay Living Center; a
Medical Group consisting of more than 40 practices spread throughout Monroe and
Wayne Counties; a Behavioral Health Network that provides adult and pediatric
care; and Independent Living for Seniors (ILS), a program for seniors designed
to enable the frail elderly to live in their own home, served by a network of
supportive services
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SOURCE Rochester General Health System
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