ArticleBMC infectious diseases2021
Divergences on expected pneumonia cases during the COVID-19 epidemic in Catalonia: a time-series analysis of primary care electronic health records covering about 6 million people.
Article in BMC infectious diseases, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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7 citing papers in PubMed, 15 citations in OpenAlex.
- Trends in all-cause pneumonia and influenza hospitalization incidence by coding position - a study of US healthcare claims, 2014-2023.Pneumonia (Nathan Qld.) · 2026Article
- Tuberculosis Trends in the Post-COVID-19 Era: Is It Going to be a Global Concern?Health science reports · 2025Article
- Sexually transmitted infections, the epidemic that persists after the COVID-19 pandemic: an analysis of the primary care electronic health records covering about 5 million people in Catalonia.BMC primary care · 2024Observational
- Changes in the medical admissions and mortality amongst children in four South African hospitals following the COVID-19 pandemic: A five-year review.PLOS global public health · 2024Article
- Low BALF CD4 T cells count is associated with extubation failure and mortality in critically ill covid-19 pneumonia.Annals of medicine · 2022Article
- The COVID-19 pandemic and disruptions to essential health services in Kenya: a retrospective time-series analysis.The Lancet. Global health · 2022Article
- Changes in mortality trends amongst common diseases during the COVID-19 pandemic in Sweden.Scandinavian journal of public health · 2022Article
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Authors and funding
11 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundPneumonia is one of the complications of COVID-19. Primary care electronic health records (EHR) have shown the utility as a surveillance system. We therefore analyse the trends of pneumonia during two waves of COVID-19 pandemic in order to use it as a clinical surveillance system and an early indicator of severity.
methodsTime series analysis of pneumonia cases, from January 2014 to December 2020. We collected pneumonia diagnoses from primary care EHR, a software system covering > 6 million people in Catalonia (Spain). We compared the trend of pneumonia in the season 2019-2020 with that in the previous years. We estimated the expected pneumonia cases with data from 2014 to 2018 using a time series regression adjusted by seasonality and influenza epidemics.
resultsBetween 4 March and 5 May 2020, 11,704 excess pneumonia cases (95% CI: 9909 to 13,498) were identified. Previously, we identified an excess from January to March 2020 in the population older than 15 years of 20%. We observed another excess pneumonia period from 22 october to 15 november of 1377 excess cases (95% CI: 665 to 2089). In contrast, we observed two great periods with reductions of pneumonia cases in children, accounting for 131 days and 3534 less pneumonia cases (95% CI, 1005 to 6064) from March to July; and 54 days and 1960 less pneumonia cases (95% CI 917 to 3002) from October to December.
conclusionsDiagnoses of pneumonia from the EHR could be used as an early and low cost surveillance system to monitor the spread of COVID-19.
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