{"doi":"10.18388/abp.2020_6015","title":"The determination of haemagglutinin influenza antibodies in the Polish population in the epidemic season 2020/2021 during the SARS-CoV-2 pandemic","abstract":"The aim of the study was to prove the level of antibodies against haemagglutinin in the sera of people from seven age groups in the epidemic season 2020/2021 in Poland to determine the differentiation of the antibody level and the protection rate depending on age. The level of anti-haemagglutinin antibodies was established by haemagglutinin inhibition test (HAI). A total of 700 randomly selected sera from people belonging to 7 different age groups were tested. The results confirmed the presence of antibodies against the following influenza antigens: A/Guangdong-Maonan/SWL1536/2019 (H1N1)pdm09-like virus, A/Hong Kong/2671/2019 (H3N2)-like virus, B/Washington/02/2019 (B/Victoria lineage)-like virus and B/Phuket/3073/2013 (B/Yamagata lineage)-like virus. The level of haemagglutinin antibodies varied between the studied age groups, with the highest values in the 5-9 age group and the lowest in the 0-4 age group. It was also proven that the protection rate was the highest for the A/Hong Kong/2671/2019(H3N2)-like virus antigen, which exceeded the protection level in the 5 age groups. Considering the very low percentage of people vaccinated in the epidemic season 2020/2021 in Poland, which amounted to only 6.1%, the results should be interpreted as the immune system's response to an infection with influenza virus.","journal":"Acta Biochimica Polonica","year":2022,"id":307033,"datarank":0.0,"base_score":0.0,"endowment":0.0,"self_citation_contribution":0.0,"citation_network_contribution":0.0,"self_endowment_contribution":0.0,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":0,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.9542,"is_data_producer":false,"deposit_databanks":null,"is_oa":true,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2022-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":541208,"name":"Ewelina Hallmann","orcid":"0000-0001-9205-1910","position":1,"is_corresponding":false},{"id":541211,"name":"Katarzyna Kondratiuk","orcid":"0000-0002-0124-2971","position":2,"is_corresponding":false},{"id":541209,"name":"Karol Szymański","orcid":"0000-0003-3269-0774","position":3,"is_corresponding":false},{"id":1001326,"name":"Adam Kolondra","orcid":"0000-0001-5849-7185","position":4,"is_corresponding":false},{"id":1001327,"name":"Anna Poznańska","orcid":"0000-0002-2026-7293","position":5,"is_corresponding":false},{"id":430972,"name":"Lidia B. Brydak","orcid":"0000-0003-0553-627X","position":6,"is_corresponding":false},{"id":1001585,"name":"Małgorzata Niedzielak","orcid":null,"position":0,"is_corresponding":true}],"reference_count":23,"raw_metadata":null,"created_at":"2026-07-19T00:32:52.703737Z","pmid":"35485001","pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}