Zarif, who is on an official visit to Cuba, toured the country's Center for Advanced Studies (CEA) and Center for Genetic Engineering and Biotechnology (CIGB) on Friday.
During the tour, the directors and managers of the two centers briefed the Iranian foreign minister on the breakthroughs made in producing different types of vaccines, especially a vaccine for the novel coronavirus.
Also, top executives of the Cuban health ministry and BioCubaFarma offered explanation on the different stages of producing various kinds of vaccines as well as cooperation between BioCubaFarma and Pasteur Institute of Iran.
The Cuban side also expressed its readiness to work closely with Iran in expert fields.
The top Iranian diplomat is going to visit Bolivia in the third leg of a Latin American tour that took him earlier to Venezuela.