tavs raksts diezgan vecs, atradu jaunāku
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11193982/ The cVDPVs have experienced a surge across several countries, including Algeria, Burundi, Chad, Indonesia, and Ukraine, in recent years. This poses a major challenge to the goal of eradicating all of the different forms of poliovirus. Most (90%) of the cVDPV outbreaks are as a result of the type 2 variant of the Sabin vaccine, which is an oral live attenuated vaccine. These outbreaks usually occur in areas where the coverage for immunization is persistently low.2
During the period from December 2020 to June 2021, there was an outbreak of circulating vaccine-derived poliovirus type 2 (cVDPV2) in Sierra Leone. Initially, a total of 34 cases were confirmed in children, and this resulted in a public health emergency. Similar outbreaks were also reported in 23 other African countries. These were attributed to a reduction in routine vaccination services, mostly due to the COVID-19 pandemic, which also resulted in the decline in population immunity.3
tur ir, ka vairākās valstīs slimība uzliesmojusi, tā nākusi no vakcīnas, bet iemesls ir pārāk maza vakcinācija sabiedrībā un zema imunitāte pēc kovida. patiesībā nesaprotu.
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