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Protocol
for the Use of Vaccinia Virus
in Research
Investigators
must obtain written approval from
the Office of Environmental Health
and Radiation Safety (EHRS) to use
vaccinia virus in research. The Penn
policy on the use of vaccinia virus
in research follows national guidelines
issued by the Centers for Disease
Control and Prevention (CDC). These
guidelines were revised in June 2001.
Accordingly, the approval protocol
for the use of vaccinia virus in research
was recently revised to reflect the
changes in the CDC guidelines. Vice
Provost for Research, Dr. Neal Nathanson,
approved the protocol after review
by the University's Institutional
Biosafety Committee.
CDC
recommends that all persons working
with nonhighly attenuated strains of
vaccinia virus be immunized, if medically
eligible, before beginning work with
virus. Principal investigators must
offer all laboratory personnel who
directly handle cultures or animals
contaminated or infected with nonhighly
attenuated vaccinia virus, recombinant vaccinia
viruses derived from nonhighly
attenuated vaccinia strains or
other Orthopoxviruses that infect
humans, the opportunity to receive
counseling and small pox immunization
from HUP's Occupational Medicine.
Other healthcare workers (e.g., physicians
and nurses) whose contact is limited
to contaminated materials (e.g., dressings)
but who adhere to appropriate infection
control procedures are at a lower
risk for inadvertent infection, however,
vaccination can be offered to this
group. Recombinant, highly attenuated
poxvirus strains (MVA, NTVAC,
ALVAC, and TROVAC) are unable to replicate
or replicate poorly in mammalian host
cells; therefore, they do not create
productive infections. Vaccination
is not recommended for workers who
do not handle nonhighly
attenuated virus cultures or materials
or who do not work with animals contaminated
or infected with these viruses. Both
the principal investigator and the
individual(s) offered immunization
are required to sign the consent/declination
form.
The
vaccinia (smallpox) vaccine that had
prior FDA approval is no longer available.
The current vaccine is a new formulation
that is not FDA approved. Before it
can receive FDA approval, it must
be evaluated for safety and efficacy.
Therefore, it is being made available
by the Centers for Disease Control
and Prevention as part of a clinical
trial. Personnel interested in obtaining
the vaccine must become a participant
in the clinical trial.
For
a complete copy of Penn's vaccinia
protocol, consult the EHRS web site, www.ehrs.upenn.edu/protocols/vaccinia.html,
or call EHRS at (215) 898-4453.
--Harriet
Izenberg, Institutional Biosafety
Officer, EHRS
Almanac, Vol. 49, No. 14, November 26, 2002
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