LISBON, Portugal — Portugal is adopting new nationwide restrictions to contain a rising number of COVID-19 infections.

From Tuesday, social gatherings are limited to a maximum of 10 people. Drinking alcohol in the street — which young people have done in groups because bars are closed — is banned.

Health authorities said Monday that 51% of the 613 new infections over the previous 24 hours were in people between 20 and 49 years old, with just 10% among people over 70.

Under the new rules, rapid response teams are on standby to attend outbreaks at nursing homes, while sports events are still not allowed to have spectators.

The daily number of new cases in Portugal dropped below 100 at the end of May, following a lockdown, but has risen significantly this month.