Brazilian President Jair Bolsonaro said on Wednesday his government would not in fact purchase a Chinese-developed vaccine against Covid-19, a day after his health minister announced a deal to buy millions of doses.“The Brazilian people will not be anyone’s guinea pig … That is why I have decided not to purchase this vaccine,” the far-right leader wrote on Facebook.Bolsonaro made the post after coming under pressure from hardline supporters to ban what one called the “Chinese dictatorship’s…