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. 2020 Oct;35(4):497-501.
doi: 10.1007/s12291-020-00921-6. Epub 2020 Aug 19.

Association of Environmental Parameters with COVID-19 in Delhi, India

Nikhilesh Ladha  1 , Pankaj Bhardwaj  1 , Jaykaran Charan  2 , Prasenjit Mitra  3 , Jagdish Prasad Goyal  4 , Praveen Sharma  3 , Kuldeep Singh  4 , Sanjeev Misra  5
Affiliations

Association of Environmental Parameters with COVID-19 in Delhi, India

Nikhilesh Ladha et al. Indian J Clin Biochem. 2020 Oct.

Abstract

The present study explores the association between weather and COVID-19 pandemic in Delhi, India. The study used the data from daily newspaper releases from the Ministry of Health and Family Welfare, Government of India. Linear regression was run to understand the effect of the number of tests, temperature, and relative humidity on the number of COVID-19 cases in Delhi. The model was significantly able to predict number of COVID-19 cases, F (4,56) = 1213.61, p < 0.05, accounting for 99.4% of the variation in COVID-19 cases with adjusted R2 = 98.8%. Maximum Temperature, average temperature and average relative humidity did not show statistical significance. The only number of tests was significantly associated with COVID-19 cases.

Keywords: COVID-19; Cases; Humidity; Temperature.

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Conflict of interest statement

Conflict of interestThe authors declare that they have no conflict of interest.

Figures

Fig. 1
Fig. 1
a Correlation between COVID-19 cases and COVID-19 tests, b correlation between COVID-19 cases and maximum temperature, c correlation between COVID-19 cases and average temperature, d distribution of COVID-19 cases according to average relative humidity
Fig. 2
Fig. 2
a Cases of the Covid-19, b number of testing (°C), c temperature maximum (°C), d temperature average (°C) and e humidity (%) in Delhi, India from January to March 29, 2020
See this image and copyright information in PMC

References

    1. Cai J, Sun W, Huang J, Gamber M, Wu J, He G. Indirect virus transmission in cluster of COVID-19 cases, Wenzhou, China, 2020. Emerg Infect Dis. 2020;26(6):1343–1345. doi: 10.3201/eid2606.200412. - DOI - PMC - PubMed
    1. Eslami H, Jalili M. The role of environmental factors to transmission of SARS-CoV-2 (COVID-19) AMB Exp. 2020;10(1):92. doi: 10.1186/s13568-020-01028-0. - DOI - PMC - PubMed
    1. Gardner EG, Kelton D, Poljak Z, Van Kerkhove M, Von Dobschuetz S, Greer AL. A case-crossover analysis of the impact of weather on primary cases of Middle East respiratory syndrome. BMC Infect Dis. 2019;19(1):1–10. doi: 10.1186/s12879-019-3729-5. - DOI - PMC - PubMed
    1. Lin K, Fong DYT, Zhu B, Karlberg J. Environmental factors on the SARS epidemic: air temperature, passage of time and multiplicative effect of hospital infection. Epidemiol Infect. 2006;134(2):223–230. doi: 10.1017/S0950268805005054. - DOI - PMC - PubMed
    1. Chan KH, Peiris JS, Lam SY, Poon LL, Yuen KY, Seto WH. The effects of temperature and relative humidity on the viability of the SARS coronavirus. Adv Virol. 2011;2011:734690. doi: 10.1155/2011/734690. - DOI - PMC - PubMed