The Philippines is known for training nurses and exporting them to all corners of the world, but now the nation finds itself short-handed just as its number of coronavirus infections and deaths skyrocket.The country’s death toll from Covid-19 has surged nearly fivefold since April 1 to 462, and the confirmed cases have tripled to 6,981. That’s despite President Rodrigo Duterte imposing a lockdown on the main island of Luzon until at least April 30.With more Filipinos becoming sick, the…