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- Path: sparky!uunet!portal!cup.portal.com!mmm
- From: mmm@cup.portal.com (Mark Robert Thorson)
- Newsgroups: sci.med
- Subject: Re: Tuberculosis
- Message-ID: <72401@cup.portal.com>
- Date: Fri, 25 Dec 92 14:01:09 PST
- Organization: The Portal System (TM)
- References: <725297239.AA00335@f-454.fidonet.org>
- Lines: 59
-
- Quoting from _ALERT_, the newsletter of the National Council for
- Environmental Balance:
-
- About 33% of the world's population harbors _Mycobacterium_ tuberculosis,
- and each year 2.9 million succumb to it. A steady decline in TB in the
- U.S. reversed in 1985, and 26,283 new cases were reported in 1991, an
- increase of 18%. The increase is not confined to groups at high risk for
- AIDS; TB cases in U.S.-born children under the age of five increased by
- 34% from 1987 to 1990. The majority of patients with TB have acquired
- the infection from non-intimate contacts. It is spread by droplet infection,
- and there is no "threshold". Animal studies have shown that one organism
- can cause infection; you can catch it on the bus.
-
- There is an additional ominous note: the emergence of drug-resistant
- strains. One-third of all cases surveyed in New York City in 1991
- were resistant to one or more drugs, and resistance has been reported from
- at least 36 states. The case fatality rate for multi-drug resistant
- TB is 40 to 60%, the same as for untreated disease.
-
- The reemergence of TB follows decades of neglect of control measures.
- By 1989, only a single professional remained in the Tuberculosis Unit
- of the World Health Organization.
-
- Patients with active, sputum-positive TB need to be isolated in
- negative pressure facilities. Ultraviolet radiation is effective for
- decontaminating droplets in the air but is not a CDC requirement.
- Standard surgical masks approach zero effectiveness; infected droplets
- pass right through, especially after the mask has been worn for about 10
- to 15 minutes. Respirators are needed but may not be tolerated by
- persons with chronic obstructive lung disease of asthma. BCG vaccine
- has been recommended for medical personnel, but its reported effectiveness
- ranges from 0% to 77%, and it destroys the usefulness of the PPD skin test.
-
- --------------------------------------------------------------
-
- The National Council for Environmental Balance promotes education on
- energy and environmental issues. The above text was quoted from an
- article discussing how imprudent public policy with regard to the use
- of insecticides, wetland preservation, energy-efficient buildings, etc.
- contributes toward disease (malaria, encephalitis, etc.). They may be
- reached at:
-
- National Council for Environmental Balance
- 4169 Westport Road
- PO Box 7732
- Louisville, KY
- 40207
-
- (502) 896-8731
-
- -----------------------------------------------------------------
-
- BTW, I have a small collection of pre-1920 medical books on tuberculosis.
- It is a very frightening disease, killing about 150,000 Americans a year
- at the turn of the century. One of my books is filled with color drawings
- of tuberculous throat lesions, and they are quite scary. If drug-resistant
- tuberculosis really catches on, we will be facing a disaster of the first
- magnitude. Of all the ways to die, death by TB is certainly among the
- least attractive.
-