- Mariana Perez Duque1,*
, Sofia Ribeiro1,2,* , João Vieira Martins1 , Pedro Casaca1 , Pedro Pinto Leite1 , Margarida Tavares3,4,5,6 , Kamal Mansinho7,8 , Luís Miguel Duque9,10 , Cândida Fernandes11 , Rita Cordeiro12 , Maria José Borrego12 , Ana Pelerito12 , Isabel Lopes de Carvalho12 , Sofia Núncio12 , Vera Manageiro12,13 , Corrado Minetti12,13 , Jorge Machado12 , Joana M Haussig14 , Roberto Croci14 , Gianfranco Spiteri14 , Ana Sofia Casal15 , Diana Mendes16 , Tiago Souto17 , Sara Pocinho17 , Teresa Fernandes15 , Ana Firme17 , Paula Vasconcelos17 , Graça Freitas18
Up to 27 May 2022, Portugal has detected 96 confirmed cases of monkeypox. We describe 27 confirmed cases (median age: 33 years (range: 22–51); all males), with an earliest symptom onset date of 29 April. Almost all cases (n = 25) live in the Lisbon and Tagus Valley health region. Most cases were neither part of identified transmission chains, nor linked to travel or had contact with symptomatic persons or with animals, suggesting the possible previously undetected spread of monkeypox.