What has research concluded about mask-wearing in relation to COVID-19?

Research has shown that mask-wearing significantly reduces person-to-person transmission of COVID-19. Masks act as barriers that can block respiratory droplets emitted when a person talks, coughs, or sneezes, which are the primary means through which the virus spreads. Studies have indicated that widespread mask usage in community settings correlates with lower infection rates, as they not only protect the wearer but also help safeguard those around them, especially in situations where physical distancing may be difficult to maintain. This mutual protection is particularly important in controlling outbreaks, making mask-wearing a key public health measure during the pandemic.

In contrast to the selected answer, options suggesting that mask-wearing has no impact or is only effective for healthcare workers do not align with the extensive body of research demonstrating the efficacy of masks in various settings.