Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Study flow chart of patient identification and participant selection Of the 554 patients who participated in comprehensive surveys of long COVID in Japan, 391 responded to additional questions on COVID-19 vaccination, of whom 174 were vaccinated and 111 had few long-term COVID symptoms at the time of vaccination. Of the 111 participants with long COVID symptoms at the time of vaccination, 15 reported improvements in their symptoms after vaccination.
