Articles: disease.
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Environmental teratogenic factors (e.g. alcohol) are preventable. We focus our analysis on human teratogenic drugs which are not used frequently during pregnancy. The previous human teratogenic studies had serious methodological problems, e.g. the first trimester concept is outdated because environmental teratogens cannot induce congenital abnormalities in the first month of gestation. ⋯ These biases explain that the teratogenic risk of drugs is exaggerated, while the benefit of medicine use during pregnancy is underestimated. Thus, a better balance is needed between the risk and benefit of drug treatments during pregnancy. Of course, we have to do our best to reduce the risk of teratogenic drugs as much as possible, however, it is worth stressing the preventive effect of drugs for maternal diseases (e.g. diabetes mellitus and hyperthermia) related congenital abnormalities.
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Hepatitis B is one of the most common infectious diseases globally. It has been estimated that there are 350 million chronic hepatitis B virus (HBV) carriers worldwide. The prevalence of chronic HBV infection varies geographically, from high (>8%), intermediate (2-7%) to low (<2%) prevalence. ⋯ Three main strategies have been approved to be effective in preventing HBV infection. They are behavior modification, passive immunoprophylaxis, and active immunization. The implement of mass HBV immunization program is recommended by the WHO since 1991, and has dramatically decreased the prevalence of HBV infection and HCC in many countries.
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Violence permeates all parts of the West Bank and Gaza Strip. Since the onset of the Al-Aqsa Intifada on the September, 28, 2000, through October 31, 2003, more than 51,000 Palestinians have been injured and 2700 have been killed. ⋯ The children also suffer from significant mental health disorders, including 33% with acute levels of posttraumatic stress disorder, 49% with moderate levels and 15.6% low levels. In "hot" areas, 55% of the children have acute levels of posttraumatic stress disorder, 35% moderate levels, and 9% low levels.