A story about catching COVID-19 after going to Vietnam

This is an old story of mine. I went to Vietnam with my mom, younger sibling, and grandmother, but I couldn't try durian because I had a terrible headache. When I returned to Korea, my fever rose to 39 degrees Celsius, so I took a self-test and it was positive for COVID-19. I drank 2 liters of Pocari and recovered.