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Biotech / Medical : BJCT-BIOJECT-needle less injection product

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To: geewiz who wrote (453)12/1/2000 8:11:11 AM
From: geewiz   of 534
 
November 28, 2000

VITAL SIGNS / New York Times

Prevention: Bigger Needles for Better
Vaccinations

By ERIC NAGOURNEY

To a patient, few things look
bigger than that needle a
doctor is about to plunge
who-knows-where to administer a
vaccine.

But some doctors are arguing that
in many cases, those syringes
ought to be even bigger.

Writing in a recent issue of The
British Medical Journal, the
doctors said that for some people,
especially overweight ones, the
needles were simply too small to
be effective.

They cited a recent study of 220
adults that found that the standard
needle (which they said was
five-eighths of an inch long) could
not penetrate the upper arms of 17
percent of the men and 50 percent
of the women because of
variations in the thickness of fat.

For men weighing 130 to 260 pounds,
and for women weighing 132 to
198 pounds, it may be better to use
a one-inch needle, the researchers
said. And for women above 198 pounds,
they said, a one-and-a-half-
inch needle may be in order.

"It is essential that vaccines reach
the muscle to ensure that the body's
immune response is triggered and to
reduce the likelihood of an adverse
reaction," the journal said.
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