The avalanche of antique puzzles available online shows no signs of abating. The most recent, provided by Playbuzz, challenges players to locate three sick people infected with yellow fever, which ravaged the population in the 1800s!

According to the website, only one percent of the population will be able to locate the patients hidden in a photograph of a nineteenth-century hospital. Scroll down to find out more. The three sick individuals with Yellow Fever are somewhere in this photo, but can you find them?

If you’re having trouble solving the riddle, look closely at the doctor’s hair and you might just detect the profile of a bearded man. Did you find all three without using a cheat?