Hospital District of Helsinki and Uusimaa recommends wearing masks while indoors in public spaces and in public events. Photograph: Tony Öhberg/Finland Today

The number of new Covid-19 cases has risen in Finland over the past few weeks, and more hospital districts are reporting new cases. The rising incidence, the growing share of positive samples, the increasing difficulties to trace sources of infection and the growing number of further infections all foreshadow an approaching acceleration stage in the pandemic.

People under 30 years of age account for nearly 60% of all cases. (56% according to the latest figures by the Hospital District of Helsinki and Uusimaa (HUS)).

“The approaching acceleration of the pandemic,” according to the assessment published on Thursday by the Ministry of Social Affairs and Health and the Finnish Institute for Health and Welfare, “calls for a rapid and proactive response.”

Of those infected with the coronavirus, only 16% know the source, according to HUS.

“We are now in a changed situation also in Finland when considering the spread of the coronavirus,” said Eeva Ruotsalainen, a deputy chief physician at the Hospital District of Helsinki and Uusimaa, in the latest corona info on Friday. “This means that one can get infected with the virus anywhere. In private events, as much as half of the participants can have been infected.”

The virus has mostly spread in schools, daycare centers, in different events and hobbies and among those sharing the same household. Mass exposures of over 10 people have occurred mostly in schools, during hobbies, in restaurants, bars and nightclubs.

As of Friday, Hospital District of Helsinki and Uusimaa recommends wearing a mask indoors in public spaces and in public events.

The recommendation, according to HUS, is necessary to help to keep the society open and to guarantee contact teaching in the near future.