Airborne SARS-CoV-2 is More Frequently Detected in Environments Related to Children and Elderly but Likely Non-infectious, Norway, 2022

Overview

Journal Virol J

Publisher Biomed Central

Specialty Microbiology

Date 2023 Nov 24

PMID 38001529

Authors

Priscilla Gomes da Silva

Mahima Hemnani

Jose Goncalves

Elisa Rodriguez

Pedro A Garcia-Encina

Maria Sao Jose Nascimento

Sofia I V Sousa

Mette Myrmel

Joao R Mesquita

Affiliations

Soon will be listed here.

Abstract

This study investigates the presence of SARS-CoV-2 in indoor and outdoor environments in two cities in Norway between April and May 2022. With the lifting of COVID-19 restrictions in the country and a focus on vaccination, this research aims to shed light on the potential for virus transmission in various settings. Air sampling was conducted in healthcare and non-healthcare facilities, covering locations frequented by individuals across different age groups. The study found that out of 31 air samples, only four showed the presence of SARS-CoV-2 RNA by RT-qPCR, with no viable virus detected after RNAse pre-treatment. These positive samples were primarily associated with environments involving children and the elderly. Notably, sequencing revealed mutations associated with increased infectivity in one of the samples. The results highlight the importance of considering children as potential sources of virus transmission, especially in settings with prolonged indoor exposure. As vaccination coverage increases globally, and with children still representing a substantial unvaccinated population, the study emphasizes the need to re-implement mask-wearing mandates indoors and in public transport to reduce virus transmission. The findings have implications for public health strategies to control COVID-19, particularly in the face of new variants and the potential for increased transmission during the autumn and winter seasons.

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