A malaria outbreak has infected at least 137 people in Indonesia's West Lombok after the island was rocked by a series of earthquakes in recent months, an official said Sunday. The quakes and aftershocks since July have killed about 500 people and forced hundreds of thousands into evacuation shelters or tents. As a result the number of malaria cases is twice as high as in the same period last year, prompting the West Lombok government to declare a health emergency.Among the 137 infected are babies and pregnant women. The government has taken steps to prevent the disease from spreading such as taking blood samples, distributing mosquito nets and fogging.Amaq Aniyah, 65, was diagnosed with malaria after feeling unwell for a week. His house was destroyed by a 6.9 magnitude quake in early August and since then he has been living in a tent. Paramedics have given him a mosquito net. "Ideally we should give mosquito nets to everyone but because we only have a few, we have to be selective," said paramedic Farlin, who like many Indonesians goes by one name. The head of West Lombok regency, Fauzan Halid, told AFP they only have 3000 mosquito nets but need about 10 000. Declaration of a health emergency will allow West Lombok to seek 3.4 billion rupiah ($230 000) in aid from the provincial and central government to tackle the crisis. Indonesia's rainy season is expected to start next month, raising fears malaria-carrying mosquitos could breed in stagnant water.