biostudies-literatureUnknown204(Pt A)Tang LIndia has suffered from the second wave of COVID-19 pandemic since March 2021. This wave of the outbreak has been more serious than the first wave pandemic in 2020, which suggests that some new transmission characteristics may exist. COVID-19 is transmitted through droplets, aerosols, and contact with infected surfaces. Air pollutants are also considered to be associated with COVID-19 transmission. However, the roles of indoor transmission in the COVID-19 pandemic and the effects of these factors in indoor environments are still poorly understood. Our study focused on reveal the role of indoor transmission in the second wave of COVID-19 pandemic in India. Our results indicated that human mobility in the home environment had the highest relative influence on COVID-19 daily growth rate in thEnvironmental research111910https://www.ebi.ac.uk/biostudies/studies/S-EPMC8401083biostudies-literatureTransmission in home environment associated with the second wave of COVID-19 pandemic in India.PMC8401083Liu XTian JTang LLiu MChen JHuang WRen BWu XfalseTransmission in home environment associated with the second wave of COVID-19 pandemic in India.India has suffered from the second wave of COVID-19 pandemic since March 2021. This wave of the outbreak has been more serious than the first wave pandemic in 2020, which suggests that some new transmission characteristics may exist. COVID-19 is transmitted through droplets, aerosols, and contact with infected surfaces. Air pollutants are also considered to be associated with COVID-19 transmission. However, the roles of indoor transmission in the COVID-19 pandemic and the effects of these factors in indoor environments are still poorly understood. Our study focused on reveal the role of indoor transmission in the second wave of COVID-19 pandemic in India. Our results indicated that human mobility in the home environment had the highest relative influence on COVID-19 daily growth rate in th2022-01-01T00:00:00Z2022 Mar2025-04-21T14:43:29.429Z2022-02-11T13:26:01.235ZS-EPMC84010833446461910.1016/j.envres.2021.111910