Przegla̧d epidemiologiczny
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In Poland, 861 cases of bacterial meningitis and encephalitis, 307 cases of viral encephalitis, 1022 of viral meningitis and 286 cases of meningitis and encephalitis of other or unknown etiology were reported in 2002. Incidence of the bacterial central nervous system infections has been declining over the past decade and the level of viral infections, following the outbreak in the mid-nineties, remained stable. ⋯ Among them Neisseria meningitidis was found in 90 cases, Haemophilus influenzae in 72 cases and Streptococcus pneumoniae in 85 cases. As in the past type B was the predominant type of N. meningitidis cultured from the patients, but type C appears to be on the rise accounting for 35% of the serotyped strains. 126 cases of tick borne encephalitis were reported in Poland in 2002, most of them from endemic areas of north-eastern part of the country.
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Yellow fever is a mosquito born viral illness that causes hemorrhagic fever in tropical Africa and South America. An estimated 200 000 people are still infected annually. There is no antiviral therapy available and vaccination is major strategy in the control yellow fever. ⋯ The vaccine is a live attenuated virus strain 17D. Recently identified vaccine associated viscerotropic diseases (YFV-AVD). This paper describes knowledge about yellow fever disease, vaccine associated adverse events and actually recommendation for vaccine use.
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The association between maternal smoking and retarded fetal grow was first time described in 1957, and now is well know. In addition smoking during pregnancy increases risk of spontaneous abortion, placenta previa, abruptio placenta, preterm premature rupture of membranes, stillbirth, preterm delivery and congenital malformations. The risk for most of these conditions has been found to increase with the number of cigarettes smoked and on the other hand women who stopped smoking during pregnancy are at the lower risk for most of those pathologies.