A total of 27 cases have now been reported in the ongoing outbreak, with the first cases reported on Saturday.
And another case has been reported from Finland in a person who fell ill after Urkult, says the Public Health Agency's acting state epidemiologist Erik Sturegård.
The majority of cases are school-age children and young adults, and most of the cases have been unvaccinated against measles, writes FHM.
According to Sturegård, most of those infected could have been included in the Swedish childhood vaccination programme.
No reason to worry
Forssmed says there is no reason for the public to be concerned.
Measles is a serious disease, but not new or unknown, and we have very high vaccination coverage, says the minister, pointing out that preparedness is good for acting quickly.
The cases have been reported from nine regions: Gotland, Jämtland Härjedalen, Skåne, Stockholm, Sörmland, Värmland, Västerbotten, Västernorrland and Västra Götaland. The Stockholm region has been hardest hit, with nine confirmed cases.
Taking the outbreak seriously
The incubation period for measles is 21 days and the Urkult festival ran until August 1. FHM does not expect any more cases to be infected at Urkult, but there is a risk that the disease will spread in environments where the infected have moved and where unvaccinated people are present.
The Public Health Agency of Sweden is taking the outbreak seriously, even though most people are coping well with the disease. Partly because the vaccines offered in the childhood vaccination programme have not been fully implemented, and partly because the disease is not harmless, according to Sturegård.
The concern I may have about this outbreak is not that it will become so large that it affects Sweden as a whole, but I do feel a genuine concern that one or more people will be seriously injured by the disease if the outbreak is allowed to grow, he says.
