Despite a desperate need for Covid-19 vaccines, Brazil is suspending a deal to purchase 20 million doses of the Indian-made Covaxin vaccines, the Ministry of Health announced on Tuesday, after questions were raised about a pricing increase.Despite a desperate need for Covid-19 vaccines, Brazil is suspending a deal to purchase 20 million doses of the Indian-made Covaxin vaccines, the Ministry of Health announced on Tuesday, after questions were raised about a pricing increase.