Reported cases of syphilis (all stages) have increased 74 percent since 2017, totaling more than 176,000 cases in 2021. Posted bymicrogen@dev May 7, 2024May 9, 2024 Leave a comment on Reported cases of syphilis (all stages) have increased 74 percent since 2017, totaling more than 176,000 cases in 2021. Reported cases of syphilis (all stages) have increased 74 percent since 2017, totaling more than 176,000 cases in 2021.