{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T04:05:21Z","timestamp":1787025921271,"version":"build-2736575974"},"reference-count":0,"publisher":"National Institute of Public Health NIH (National Research Institute)","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Przegl Epidemiol"],"abstract":"<p><strong>ABSTRACT<\/strong><br \/><strong>INTRODUCTION.<\/strong> Chickenpox is an infectious disease caused by the varicella zoster virus. The characteristic\u00a0feature of this virus is very high visibility of 90-95%. The most common connection is direct contact with\u00a0the disease or via droplets. The United States was the first country to introduce a universal, population-based\u00a0childhood varicella vaccination program in 1995. In its 25 years of implementation, this program has significantly\u00a0reduced the burden of chickenpox. There was a more than 97% reduction in varicella incidence and a 90%\u00a0reduction in varicella-related hospitalizations and deaths, the highest (99%) in those under the age of 20 (born\u00a0after starting the vaccination programme). Chickenpox is very common in Poland. In recent years, starting from\u00a02002, there has been an upward trend in the incidence of chickenpox, except for 2020. In 2020, a decrease in the\u00a0number of cases was recorded.<br \/><strong>OBJECTIVES.<\/strong> The aim of the study was to assess the epidemiological situation of chickenpox in Poland in\u00a02020 and to compare it with the situation in previous years.<br \/><strong>MATERIAL AND METHODS.<\/strong> Evaluation of the epidemiological situation of chickenpox in Poland in 2020\u00a0was based on the results of the analysis of aggregate data published in the annual bulletins: \u201cInfectious diseases\u00a0and poisonings in Poland in 2020.\u201d and \u201cVaccinations in Poland in 2020\u201d. In addition, recommendations from\u00a0the Protective Vaccination Program for 2020 were used.<br \/><strong>RESULTS.<\/strong> In 2020, 71,567 cases of chickenpox were registered in Poland, i.e. 39.6% less than in the previous\u00a0year. The incidence of chickenpox in 2020 was 186.6 per 100,000 and was lower than in 2019. The lowest\u00a0incidence was recorded in the \u015awi\u0119tokrzyskie Voivodship \u2013 118.5\/100,000, while the highest in the Kujawsko-Pomorskie Voivodeship \u2013 263.5\/100,000. Most cases concerned children aged 0-4 years (36,661). The incidence\u00a0of chickenpox in men was higher than in women, and in rural areas higher than in urban dwellers. Hospitalization\u00a0due to chickenpox in 2020 covered 1,368 people, which accounted for 0.51% of the total number of registered\u00a0cases.<br \/><strong>CONCLUSIONS.<\/strong> In 2020, there was a decrease in the number of cases of chickenpox compared to the previous\u00a0year. The lower incidence may have been the result of reduced transmission of the varicella virus due to changes\u00a0in the health behavior of the population during the COVID-19 pandemic (isolation measures and the introduction\u00a0of a lock down throughout Poland limiting the activity of the population).<\/p>\n<p><strong>STRESZCZENIE<\/strong><br \/><strong>WST\u0118P.<\/strong> Ospa wietrzna jest chorob\u0105 zaka\u017an\u0105 wywo\u0142ywan\u0105 przez wirusa ospy wietrznej i p\u00f3\u0142pa\u015bca. Cech\u0105\u00a0charakterystyczn\u0105 tego wirusa jest bardzo wysoka zara\u017aliwo\u015b\u0107 si\u0119gaj\u0105ca 90-95%. Najcz\u0119stszym \u017ar\u00f3d\u0142em zaka\u017cenia\u00a0jest bezpo\u015bredni kontakt z chorym lub droga kropelkowa. Stany Zjednoczone by\u0142y pierwszym krajem,\u00a0kt\u00f3ry w 1995 roku wprowadzi\u0142 powszechny, populacyjny program szczepie\u0144 przeciw ospie wietrznej u dzieci.\u00a0W ci\u0105gu 25 lat realizacji program ten znacznie zmniejszy\u0142 obci\u0105\u017cenie wynikaj\u0105ce z zachorowa\u0144 na osp\u0119 wietrzn\u0105. Odnotowano ponad 97% spadek zachorowalno\u015bci na osp\u0119 wietrzn\u0105 oraz 90% spadek liczby hospitalizacji\u00a0i zgon\u00f3w zwi\u0105zanych z osp\u0105 wietrzn\u0105, najwy\u017cszy (99%) u os\u00f3b w wieku poni\u017cej 20 lat (urodzonych po rozpocz\u0119ciu\u00a0programu szczepie\u0144). W Polsce ospa wietrzna jest bardzo cz\u0119sta. Pocz\u0105wszy od 2002 r. \u2013 poza rokiem\u00a02020 \u2013 utrzymuje si\u0119 tendencja wzrostowa zapadalno\u015bci na osp\u0119 wietrzn\u0105. W 2020 roku odnotowano spadek\u00a0zachorowa\u0144.<br \/><strong>CEL PRACY.<\/strong> Celem pracy by\u0142a ocena sytuacji epidemiologicznej ospy wietrznej w Polsce w 2020 r. oraz por\u00f3wnanie\u00a0z sytuacj\u0105 w poprzednich latach.<br \/><strong>MATERIA\u0141 I METODY.<\/strong> Ocen\u0119 sytuacji epidemiologicznej ospy wietrznej w Polsce w 2020 r. przeprowadzono\u00a0na podstawie wynik\u00f3w analizy danych zbiorczych opublikowanych w rocznych biuletynach: \u201eChoroby\u00a0zaka\u017ane i zatrucia w Polsce w 2020 r.\u201d oraz \u201eSzczepienia Ochronne w Polsce w 2020 r.\u201d. Ponadto wykorzystano\u00a0zalecenia z Programu Szczepie\u0144 Ochronnych na 2020 r.<br \/><strong>WYNIKI.<\/strong> W 2020 r. w Polsce zarejestrowano 71 567 zachorowa\u0144 na osp\u0119 wietrzn\u0105, tj. o 39,6% mniej ni\u017c w roku\u00a0poprzednim. Zapadalno\u015b\u0107 na osp\u0119 wietrzn\u0105 w roku 2020 wynosi\u0142a 186,6 na 100 tys. i by\u0142a ni\u017csza ni\u017c w 2019 r.\u00a0Najni\u017csz\u0105 zapadalno\u015b\u0107 zarejestrowano w wojew\u00f3dztwie \u015bwi\u0119tokrzyskim \u2013 118,5\/100 tys., najwy\u017csz\u0105 natomiast\u00a0w wojew\u00f3dztwie kujawsko-pomorskim \u2013 263,5\/100 tys. Najwi\u0119cej zachorowa\u0144 dotyczy\u0142o dzieci w wieku 0-4\u00a0lata (36 661). Zapadalno\u015b\u0107 na osp\u0119 wietrzn\u0105 m\u0119\u017cczyzn by\u0142a wy\u017csza ni\u017c kobiet, a mieszka\u0144c\u00f3w wsi wy\u017csza ni\u017c\u00a0mieszka\u0144c\u00f3w miast. Hospitalizacja z powodu ospy wietrznej w 2020 r. obj\u0119\u0142a 1 368 os\u00f3b, co stanowi\u0142o 0,51%\u00a0og\u00f3\u0142u liczby zarejestrowanych zachorowa\u0144.<br \/><strong>PODSUMOWANIE.<\/strong> W 2020 r. wyst\u0105pi\u0142 spadek liczby zachorowa\u0144 na osp\u0119 wietrzn\u0105 w por\u00f3wnaniu z poprzednim\u00a0rokiem. Ni\u017csza zapadalno\u015b\u0107 mog\u0142a by\u0107 wynikiem zmniejszenia transmisji wirusa ospy wietrznej z powodu\u00a0zmiany zachowa\u0144 zdrowotnych populacji w czasie pandemii COVID-19 (dzia\u0142ania izolacyjne oraz wprowadzenie\u00a0w ca\u0142ej Polsce lock down\u2019u ograniczaj\u0105cego aktywno\u015b\u0107 populacji).<\/p><\/jats:p>","DOI":"10.32394\/pe.76.52","type":"journal-article","created":{"date-parts":[[2023,4,5]],"date-time":"2023-04-05T05:47:48Z","timestamp":1680673668000},"page":"568-573","source":"Crossref","is-referenced-by-count":3,"title":["Chickenpox in Poland in 2020"],"prefix":"10.32394","volume":"76","author":[{"given":"J","family":"Bogusz","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"I","family":"Paradowska-Stankiewicz","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"17323","published-online":{"date-parts":[[2023,4,5]]},"container-title":["Przeglad Epidemiologiczny"],"original-title":["Ospa wietrzna w Polsce w 2020 roku"],"link":[{"URL":"https:\/\/www.przeglepidemiol.pzh.gov.pl\/pdf-181099-101660","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/www.przeglepidemiol.pzh.gov.pl\/pdf-181099-101660","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,3,8]],"date-time":"2024-03-08T03:43:54Z","timestamp":1709869434000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.przeglepidemiol.pzh.gov.pl\/Chickenpox-in-Poland-in-2020,181099,0,2.html"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,4,5]]},"references-count":0,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2022]]}},"alternative-id":["181099"],"URL":"https:\/\/doi.org\/10.32394\/pe.76.52","relation":{},"ISSN":["0033-2100","2545-1898"],"issn-type":[{"value":"0033-2100","type":"print"},{"value":"2545-1898","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,4,5]]}}}