n any given year between 1891 and 1928, less than 3% of the total amount of those seeking entry to the United States were actually rejected for reasons of a contagious, infectious, or loathsome disease; mental disorder; or physical dis- ability.
For all 'm aware of as an immigrant, people no longer get denied entry because of the state if their health, however, measures are being put in place to curb the spread or even treat the disease e.g quarantine of COVID-19 patients, treatment of Tubercolosis before arrival, yellow fever vaccination etc. It only makes sense that these measures are in place as some disease are truly more prevalent in some countries than the other.