16 March: Nine new cases were confirmed by the national Ministry of Health in the City of Buenos Aires (5) and the provinces of Chaco (3) and Buenos Aires (1), bringing the total to 65.[31] Soon after in the night, the Governor of Chaco confirmed the provincial number of four more cases instead of three, bringing the total to 66.[32] Tierra del Fuego was put on lockdown later that day, becoming the first province to do so.[33]