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1.
Euro Surveill ; 28(31)2023 08.
Article in English | MEDLINE | ID: mdl-37535471

ABSTRACT

In June 2023, a fatal disease outbreak in cats occurred in Poland. Most cases tested in Poland (29 of 47) were positive for highly pathogenic avian influenza (HPAI) A (H5N1) virus. Genetic analyses revealed clade 2.3.4.4b with point mutations indicative of initial mammalian hosts adaptations. Cat viral sequences were highly similar (n = 21), suggesting a potential common infection source. To investigate possible infection routes, our group tested food samples from affected households. HPAI H5N1 virus was detected in one poultry meat sample.


Subject(s)
Influenza A Virus, H5N1 Subtype , Influenza A virus , Influenza in Birds , Animals , Cats , Influenza A Virus, H5N1 Subtype/genetics , Influenza in Birds/epidemiology , Poland/epidemiology , Birds , Phylogeny , Mammals
2.
Euro Surveill ; 26(39)2021 09.
Article in English | MEDLINE | ID: mdl-34596017

ABSTRACT

Routine genomic surveillance on samples from COVID-19 patients collected in Poland during summer 2021 revealed the emergence of a SARS-CoV-2 Delta variant with a large 872 nt deletion. This change, confirmed by Sanger and deep sequencing, causes complete loss of ORF7a, ORF7b, and ORF8 genes. The index case carrying the deletion is unknown. The standard pipeline for sequencing may mask this deletion with a long stretch of N's. Effects of this deletion on phenotype or immune evasion needs further study.


Subject(s)
COVID-19 , SARS-CoV-2 , Humans , Poland
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