By RICARDO CASTILLO Covid Vaccine Trials Mexico will soon launch phase 3 trials of the Canadian-Chinese covid-19 vaccine called CanSino Biologics developed by Janssen Labs, a subsidiary of Johnson & Johnson. The vaccine trials will be held in Mexico City, the Pacific Coast states of Michoacán, Guerrero and Oaxaca, and the northern border states Coahuila and Nuevo León, accross from