Civil Protection Headquarters made a decision the same day to prolong the measures until 4 May . On same day media also reported that biologists at Universty Hospital Fran Mihaljević in Zagreb succesfuly isolated SARS-CoV-2 sample and sent it off to Germany for further testing.
On 4 May , the media reported that biologists at University Hospital Fran Mihaljević in Zagreb successfully isolated the SARS-CoV-2 sample during the pandemic in Croatia .