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Correlation between UV Index, Temperature and Humidity with Respect to Incidence and Severity of COVID 19 in Spain

Pérez-Gilaberte et al., International Journal of Environmental Research and Public Health, doi:10.3390/ijerph20031973
Jan 2023  
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Sunlight for COVID-19
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Analysis of COVID-19 in 5 provinces in Spain, showing UV exposure negatively correlated with COVID-19 cases and hospitalization.
Pérez-Gilaberte et al., 20 Jan 2023, Spain, peer-reviewed, 6 authors, study period January 2020 - February 2021. Contact: jaguilera@uma.es (corresponding author).
This PaperSunlightAll
Correlation between UV Index, Temperature and Humidity with Respect to Incidence and Severity of COVID 19 in Spain
Juan Blas Pérez-Gilaberte, Natalia Martín-Iranzo, Jo Aguilera, Manuel Almenara-Blasco, Victoria María, De Gálvez, Yolanda Gilaberte
Background: Various studies support the inverse correlation between solar exposure and Coronavirus SARS-CoV-2 infection. In Spain, from the Canary Islands to the northern part of the country, the global incidence of COVID-19 is different depending on latitude, which could be related to different meteorological conditions such as temperature, humidity, and ultraviolet index (UVI). The objective of the present work was to analyze the association between UVI, other relevant environmental factors such as temperature and humidity, and the incidence, severity, and mortality of COVID-19 at different latitudes in Spain. Methods: An observational prospective study was conducted, recording the numbers of new cases, hospitalizations, patients in critical units, mortality rates, and annual variations related to UVI, temperature, and humidity in five different provinces of Spain from January 2020 to February 2021. Results: Statistically significant inverse correlations (Spearman coefficients) were observed between UVI, temperature, annual changes, and the incidence of COVID-19 cases at almost all latitudes. Conclusion: Higher ultraviolet radiation levels and mean temperatures could contribute to reducing COVID-19 incidence, hospitalizations, and mortality.
Institutional Review Board Statement: The authors declare that ethics approval and consent to participate is not applicable, as data were obtained from the official public source of the Spanish National Epidemiological Centre (CNE) in Spain. Public epidemiological COVID-19 data were obtained from https://cnecovid.isciii.es (accessed on 14 March 2021). Informed Consent Statement: Authors declare no application of consent for publication, as data sources are public and epidemiological data are derived from anonymous sources. Conflicts of Interest: The authors declare no conflict of interest.
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Please send us corrections, updates, or comments. c19early involves the extraction of 100,000+ datapoints from thousands of papers. Community updates help ensure high accuracy. Treatments and other interventions are complementary. All practical, effective, and safe means should be used based on risk/benefit analysis. No treatment or intervention is 100% available and effective for all current and future variants. We do not provide medical advice. Before taking any medication, consult a qualified physician who can provide personalized advice and details of risks and benefits based on your medical history and situation. FLCCC and WCH provide treatment protocols.
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