Association between self-reported masking behavior and SARS-CoV-2 infection wanes from Pre-Delta to Omicron-predominant periods - North Carolina COVID-19 Community Research Partnership (NC-CCRP).

ABSTRACT:

Background

Wearing a face mask is a primary public health method to reduce SARS-CoV-2 transmission.

Methods

We performed a nested case-control analysis within the North Carolina COVID-19 Community Research Partnership (NC-CCRP) of adults who completed daily surveillance surveys, April 2020 - February 2022. We assessed the association between self-reported mask wearing behavior during nonhousehold interactions and COVID-19 infection during 3 pandemic periods using conditional logistic regression models of risk of infection that were adjusted for demographics, vaccination status, and recent known exposure to COVID-19.

Results

Among 3,901 cases and 27,813 date-matched controls, there was a significant interaction between mask use and time period (P < .001). Prior to July

SUBMITTER: Tjaden AH 

PROVIDER: S-EPMC9537112 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature