Brazil made a diplomatic push on Monday to guarantee an Indian-made shipment of British drugmaker AstraZeneca's COVID-19 vaccine, hoping to avoid export restrictions that could delay immunizations during the world's second-deadliest outbreak.In parallel, Brazil's private clinics struck a preliminary deal for an alternative injection made by India's Bharat Biotech despite a lack of public results from late-stage trials.Also read | India’s hunt for the new Vision 2020The scramble by Brazil's government and private sector underscored how Latin America's largest nation, once an example of mass immunization success in the developing world, has fallen behind peers in the race to inoculate against the coronavirus.Plans by Brazil's Fiocruz.