Vaccination coverage of triple viral and poliomyelitis in Brazil, 2011-2021: temporal trend and spatial dependency

• Published in: Revista brasileira de epidemiologia 2023-01, Vol.26, p.e230047-e230047
• Main Authors: Palmieri, Isadora Gabriella Silva, Lima, Lucas Vinícius de, Pavinati, Gabriel, Silva, José Arthur Paschoalotto, Marcon, Sonia Silva, Sato, Ana Paula Sayuri, Magnabosco, Gabriela Tavares
• Format: Article
• Language: English
• Subjects: Anti-vaccination movement; Original; Public health surveillance; PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH; Vaccine-preventable diseases; Vaccines
• ISSN: 1415-790X; 1980-5497; 1980-5497
• DOI: 10.1590/1980-549720230047

ABSTRACT Objective: To analyze the coverage of MMR and polio vaccines, the temporal trend and spatial dependence, in children up to one year of age in Brazil, between 2011 and 2021. Methods: Ecological study with secondary data on vaccination coverage rates, made available by the National Immunization Program Information System. Trend analysis was carried out using the joinpoint method, according to geographic regions, estimating the annual percentage change (APC) and its respective confidence interval (95%CI). Choropleth maps of distribution by health region were constructed and, subsequently, the spatial dependence was verified using Moran's statistics. Results: Between 2011 and 2021, vaccination coverage declined in Brazil, both for MMR (APC: −6.4%; 95%CI −9.0; −3.8) and for poliomyelitis (APC: −4. 5%; 95%CI −5.5; −3.6). There was a decline in coverage of both vaccines in all geographic regions over the years of the study, except in the South and Midwest for the MMR vaccine. Since 2015, few health regions in the country have achieved adequate vaccination coverage (≥95.0% to