The Senate of the Philippines is at loggerheads with President Rodrigo Duterte over his continued endorsement of health secretary Francisco Duque III, whom the upper chamber has accused of criminal negligence and gross mismanagement of the Covid-19 pandemic.Twenty of the body’s 24 senators recommended Duque’s sacking in a 93-page report on September 1 that detailed his lapses as chairman of the board for Philippine Health Insurance Corporation (PhilHealth), the state agency paying for medical…