The U.S. syphilis epidemic slowed dramatically last year, gonorrhea cases fell and chlamydia cases remained below prepandemic levels, according to federal data released Tuesday.

Gonorrhea cases dropped 7%, marking a second straight year of decline and bringing the number below what it was in 2019.

Last year, cases of the most infectious stages of syphilis fell 10% from the year before — the first substantial decline in more than two decades.