LAHORE - The recent monsoon rains can increase the number of dengue cases but people should not be worried as the dengue fever is almost 100 per cent self-limiting disease, which does not need sophisticated treatment. There is hardly any mortality associated with the said disease. The speakers said this while addressing a seminar organised by the Pakistan Medical Society (PMS) in collaboration with the Mother & Child Trust. The Chairman PMS Dr Masood Akhter Sheikh also briefed the local school children about preventive measures to avoid from the mosquito borne diseases. Mother & Child Trust President Dr Iram, Dr Israr Asif and Dr Fauzia also spoke on the occasion. Addressing the seminar, Dr Masood Sheikh suggested that anti-mosquito sprays should be sprinkled inside the house as the sprays work more than that sprinkled in the streets, as this is a domestic mosquito not a street one. About the habitat of this particular mosquito, he informed that it grows in fresh water so one has to be conscious that water tanks are kept clean, no residual water should remain in water pots, home lawns and money plants or any other discarded container. He said that checking of open vases, discarded containers or old tires in which water could accumulate was imperative as the mosquito could thrive in these too. He stressed that simple measure could prevent the spread of dengue fever like using mosquito repellent at the times when its attack occurs, changing water in the pots daily and avoiding fresh water to get pooled in and around houses. Dr Masood said habitually, the mosquito bites early morning and at the sunset, not usually at other times. The disease is predominantly that of urban population, as the rural setting doest not favour its spread. This disease silently infects 50 million peoples worldwide each year, as its symptoms are similar to common cold/flu, he added.  Dr Masood said that dengue fever is caused by the bite of a female mosquito of the genre, Aedes Aegypti. This mosquito carries the dengue virus in its active form. The PMS chairman viewed that dangerous forms of this are not the dengue fever but the dengue hemorrhagic fever (DHF), which is less than 1 per cent of the total dengue fever cases while the Dengue Shock Syndrome (DSS) is very rare. The mortality in DHF and DSS is less than 10-20 per cent on case-to-case basis out of all DHF and DSS patients, he explained. Dr Iram said neonates and children should be given extra care as they were at a higher risk than adults. She said the symptoms of dengue fever were flu, coughing and fever, which could be mistaken for common cold. She said human immune system was capable to fight dengue virus and that in most of cases no medical attention was required to treat it. Dr Iram said there was a possibility that a patient could be affected both with common cold and dengue fever at the same it. She said that dengue patients sometimes did not exhibit any symptoms.