The cases have been confirmed, so far, in Lisbon and Vale do Tejo, North and Algarve.

"All confirmed infections are in men between the ages of 23 and 61, with the majority under the age of 40," the note reads.

The 58 cases already identified "remain in clinical follow-up, and are stable and in an outpatient clinic". The DGS reminds that "individuals who present ulcerative lesions, skin rash, palpable lymph nodes, possibly accompanied by fever, chills, headaches, muscle pain and tiredness, should seek clinical advice" and asks that when they go to a health unit, to cover the skin lesions.

National vaccine reserve

In the statement, the Directorate-General for Health also reveals that, with the help of Europe, it is starting to buy vaccines to start the "national vaccine reserve".

"The DGS also informs that Portugal is taking steps to establish a national vaccine reserve, through the European mechanism", it reads.