The WHO recommends immunization of high-risk groups, such as children and people with HIV, in countries where this disease is endemic. If people are immunized broadly, herd immunity results, with a decrease in the amount of contamination in the environment.WHO recommends that oral cholera vaccination be considered in areas where the disease is endemic (with seasonal peaks), as part of the response to outbreaks, or in a humanitarian crisis during which the risk of cholera is high. Oral Cholera Vaccine (OCV) has been recognized as an adjunct tool for prevention and control of cholera. The World Health Organization (WHO) has prequalified three bivalent cholera vaccines—Dukoral (SBL Vaccines), containing a non-toxic B-subunit of cholera toxin and providing protection against V. cholerae O1; and two vaccines developed using the same transfer of technology—ShanChol (Shantha Biotec) and Euvichol (EuBiologics Co.), which have bivalent O1 and O139 oral killed cholera vaccines. Oral cholera vaccination could be deployed in a diverse range of situations from cholera-endemic areas and locations of humanitarian crises, but no clear consensus exists. Sari filtration
Developed for use in Bangladesh, the "sari filter" is a simple and cost-effective appropriate technology method for reducing the contamination of drinking water. Used sari cloth is preferable but other types of used cloth can be used with some effect, though the effectiveness will vary significantly. Used cloth is more effective than new cloth, as the repeated washing reduces the space between the fibers.
Rifampicin/isoniazid/pyrazinamide, also known as rifampin/isoniazid/pyrazinamide, and sold under the trade name Rifater, is a medication used to treat tuberculosis. It is a fixed dose combination of rifampicin, isoniazid, and pyrazinamide. It is used either by itself or along with other antituberculosis medication. It is taken by mouth.Side effects are those of the underlying medications. These may include poor coordination, loss of appetite, nausea, joint pain, feeling tired, and numbness. Severe side effects include liver problems. Use in those under the age of 15 may not be appropriate. It is unclear if use in pregnancy is safe for the baby.Rifampicin/isoniazid/pyrazinamide was approved for medical use in the United States in 1994. It is on the World Health Organizations List of Essential Medicines. Medical uses
The hope of a fixed-dose combination pill is to increase the likelihood that people will take all of three medications. Also, if people forget to take one or two of their drugs, they might not then develop resistance to the remaining drugs. Society and culture
It is manufactured by Aventis. See also
Tuberculosis treatment
Rifampicin + isoniazid + ethambutol


== References ==