Online search interest in long-term symptoms of coronavirus disease 2019 during the COVID-19 pandemic in Japan: Infodemiology study using the most visited search engine in Japan.
Prolonged symptoms that occur after COVID-19 (long-COVID) vary from mild, which do not interfere with daily life, to severe, which require long-term social support.This study assessed the secular trend in online searches on long-COVID in Japan.We conducted an observational study using data provided by Yahoo! JAPAN on the monthly search volume of qu