Health authorities are now advising anyone who thinks they may have been infected to stay away from health clinics and hospitals, and to call the health service helpline instead.
"Anyone who suspects they have the measles, which is a highly contagious viral disease, should first get healthcare advice by telephone," says physician Katarina Widgren at the Swedish Institute for Communicable Disease Control.
"Do not sit in an emergency room or clinic, otherwise you will expose others to the infection," she emphasized.
Symptons of the measles include high fever, coughs, red eyes, light sensitivity and a red rash. Widgren says that vaccination protection against measles is generally good in Sweden but some born before the jabs were introduced in 1975 might not have been vaccinated against the disease.
The first person to contract the disease in the latest outbreak was infected abroad. And while the most recent case in Stockholm was February 2, in Uppsala the outbreak is still going on.