(Carolyn Cole / Los Angeles Times)It was Day 264 at United Memorial Medical Center in Houston. When the pandemic started, Treviño was working in the ICU and avoided the COVID-19 unit. One of their colleagues had just been admitted to the COVID-19 unit for the second time. (Carolyn Cole / Los Angeles Times)Things were quieting down by 6:30 p.m. as Treviño neared the end of her shift on Day 264. (Carolyn Cole / Los Angeles Times)Treviño rubbed her ears, sore from being mashed down under her mask all day.

Source: Los Angeles Times December 20, 2020 12:00 UTC