Inclusion Criteria:  Consecutive ischemic stroke patients receiving acute recanalization treatment (intravenous thrombolysis and/or endovascular treatment) up to 24 hours since last time since well, and according to local treatment criteria From 1st of March 2020 (for Chinese Centers from 1st January 2020)  Exclusion Criteria:  Patients without a PCR- or antigen test within the first 7 days after treatment Patients with nosocomial SARS-CoV-2 infection after receiving acute recanalization treatment - PCR- or antigen test becoming positive more than 7 days after treatment Patients with "Suspect/ probable case of SARS-CoV-2 infection" according to the World Health Organization definition Symptomatic cases of SARS-CoV-2 infection with symptoms resolution more than 7 days before treatment Asymptomatic cases of SARS-CoV-2 infection with treatment performed more than 10 days after first positive test for SARS-CoV-2