Estimates of the Risk of Endemic Transmission of Hepatitis B Virus and Human Immunodeficiency Virus to Patients by the Percutaneous Route During Invasive Surgical and Dental Procedures (Draft)

DR.'A'FT

10

F.Or CyrT~e. In prqspeclive studies of surgeons and dentists who.
*-# r o 4eAg oiie rhdacute HBy infection, the risk~
ocf 14,3YV*r r,.Lss io n t o ptient was approximately 1 in 1,640
prce..c~irforpmed (0.06), as noted above, However, in HBV.3 4.)oiatad with infected HCWs for which rates of HBV
t r ios 1 S,, I nn 7p a ti an t uid be calculated, these rates have
rn qe _ i fr t ' to0 9.0 In one outbreak, the risk of EBV-.
7N! C1 pten~urceronghsterectomy or cesarean,
No~.oocp n% a" outbrea~ks in which the risk.o
t rR ni.,a s elevatOd above an endemic, "baseline" tl*_,sk. "(aknd
in c r~mi~o rm C optient continued dept
a rr~ p eaiuras) have also been SeCb4fr
Ot~E~v ~ ~ pauses of increae tran~sib~4t
in ~ i'~rer~o~ a~'y~ cl.ear, but mayinclu de vtwJo~i
pro Ee k~t e,Us.rg cal or dehtltcnqa *~
inrf 0.n trol precai~tic ns used, tiie' % the ifet4.l g
S.1triity ~ft~ aint.toi ai~

to 1T2 C BVconi~
H C ' Koudc,3i to a
Al~r evnos.u Q 0f a pa
the M c 71r JQ~nrc;n~
or botA -.iv.y'3) pro
r-0n r roocriif
e~r&.Wv~,-nb' the H.
Twi rw-,t e <d a te fro
Patienft) t h.,uc: a dn
I el, ~v ic e sused i
tr d data, on the tre
s~tings a~ra 11l4,dted an
anid dental invasive proiFstiinates of injur re
model must be interpzet
data were obtained fro
rather than f rom prosgpe
numbers of poeue w
by dent ists. Martyof ' th
invasive as, the pzroceduFourth, the prob4~t
percutaneous expdsure to
the injury and other.f ac
the model, due to -the la9
quantitate the pos sible,
tho nature of inIu Ies
dent&! prcocedures, 'nmt

ei~ n urpobc e
Pk& ntoaccount
~ ~Iuin9 ) muous ebaeo
~~~~ ~,~1ra~Q o
- ~ ~~rt t o~ uUnagr*
4& p ~&to a iet w *ei
at ret o dinfein
en yffi~4sth ita nd dgntald
in yiotb a lia1 toal ugi l
'fd ' IVe o-tt ll*~' tn5o dnIs
a 1 ive T3ey,
teon~a~ 4 aftr A,
heh