That's overall community effectiveness, and with only 50% mask compliance: “It’s notable that even though fewer than 50% of the people in the intervention vill

That's overall community effectiveness, and with only 50% mask compliance: “It’s notable that even though fewer than 50% of the people in the intervention villages wore masks in public places, we still saw a significant risk reduction in symptomatic COVID-19 in these communities, particularly in elderly, more vulnerable people.” And the protective effect was even more pronounced in the elderly: The protective effect increased to nearly 35% for people over 60 years old.