One of the perquisites of my job as a library guy is that I stumble across gems like this in the medical literature. Puts a new spin on those Pakistani razors.

Excerpted from S Afr Med J. 2005 Feb;95(2): 94, 96. Barber shaving and blood-borne disease transmission in developing countries. Khaliq AA, Smego RA.

In Nagpur, India, Khandait and co-workers assessed
knowledge of HIV transmission among 375 randomly selected
barbers and found that 81% were ignorant about modes of HIV
transmission, particularly transmission via razor blades.
Practices such as re-using the same blade, using fixed-blade
razors, and performing inadequate disinfection procedures
were common, especially among roadside barbers. A
community-based questionnaire study in the twin cities of
Rawalpindi-Islamabad, Pakistan, found daily face and armpit
shaving by a barber to be risk factors for HCV infection in male adults,
with attributable population risks of 29.4% and 33.6%, respectively
.

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Regards &c
Library Guy