Philippines: Storm survivors face threat of disease

12 October 2009: Children on the roof of their house in the town of Calumpit, Bulacan province Photograph: Noel Celis/AFP/Getty Images

12 October 2009: People use makeshift bridges to leave their house in Calumpit Photograph: Rolex Dela Pena/EPA

12 October 2009: Stranded commuters walking along a footpath below a collapsed highway in the town of Tuba, Benguet province Photograph: Ted Aljibe/AFP/Getty Images

15 October 2009: A woman sitting on an improvised raft is pulled through the floodwaters in San Pedro, Laguna province Photograph: Romeo Ranoco/Reuters

16 October 2009: Patients suffering from leptospirosis, a bacterial disease usually caused by exposure to water contaminated with animal urine, are treated at an overcrowded government hospital in Manila Photograph: Jay Directo/AFP/Getty Images

16 October 2009: People use a makeshift bridge and floating rafts to avoid floodwaters in Pasig City, east of Manila Photograph: Rolex Dela Pena/EPA

17 October 2009: Pedestrians walk over a makeshift overpass above floodwaters in Pasig City Photograph: Jay Directo/AFP/Getty Images

18 October 2009: Vehicles travel along the damaged Halsema highway in Benguet province Photograph: Reuters

18 October 2009: Patients infected with leptospirosis crowd the lobby of the state-run Amang Rodriguez medical centre in Marikina City in suburban Manila Photograph: Jay Directo/AFP/Getty Images

19 Ocotber 2009: Health secretary Francisco Duque III with a patient who has leptospirosis at the San Lazaro Hospital in Manila Photograph: Romeo Ranoco/Reuters