Do Weather Conditions Still Have an Impact on the COVID-19 Pandemic? An Observation of the Mid-2022 COVID-19 Peak in Taiwan

Author:

Lin Wan-Yi123ORCID,Lin Hao-Hsuan234ORCID,Chang Shih-An234ORCID,Chen Wang Tai-Chi5,Chen Juei-Chao6ORCID,Chen Yu-Sheng234ORCID

Affiliation:

1. Department of Traditional Chinese Medicine, Chang Gung Memorial Hospital, Keelung 204201, Taiwan

2. School of Traditional Chinese Medicine, Chang Gung University, Taoyuan 333323, Taiwan

3. Taiwan Huangdi-Neijing Medical Practice Association (THMPA), Taoyuan 330032, Taiwan

4. Department of Chinese Acupuncture and Traumatology, Center of Traditional Chinese Medicine, Chang Gung Memorial Hospital, Taoyuan 333008, Taiwan

5. Department of Atmospheric Sciences, National Central University, Taoyuan 320317, Taiwan

6. Department of Statistics and Information Science, Fu Jen Catholic University, New Taipei City 242062, Taiwan

Abstract

Since the onset of the COVID-19 pandemic in 2019, the role of weather conditions in influencing transmission has been unclear, with results varying across different studies. Given the changes in border policies and the higher vaccination rates compared to earlier conditions, this study aimed to reassess the impact of weather on COVID-19, focusing on local climate effects. We analyzed daily COVID-19 case data and weather factors such as temperature, humidity, wind speed, and a diurnal temperature range from 1 March to 15 August 2022 across six regions in Taiwan. This study found a positive correlation between maximum daily temperature and relative humidity with new COVID-19 cases, whereas wind speed and diurnal temperature range were negatively correlated. Additionally, a significant positive correlation was identified between the unease environmental condition factor (UECF, calculated as RH*Tmax/WS), the kind of Climate Factor Complex (CFC), and confirmed cases. The findings highlight the influence of local weather conditions on COVID-19 transmission, suggesting that such factors can alter environmental comfort and human behavior, thereby affecting disease spread. We also introduced the Fire-Qi Period concept to explain the cyclic climatic variations influencing infectious disease outbreaks globally. This study emphasizes the necessity of considering both local and global climatic effects on infectious diseases.

Publisher

MDPI AG

Reference59 articles.

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