Balaji Electronics
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Basic Information
Nature of Business
Total Number of Employees
101 to 500 People
Year of Establishment
Legal Status of Firm
Individual - Proprietor

What are the diseases transmitted by mosquitoes ?

Malaria, dengue fever, Japanese encephalitis and filariasis are the most common in India. Sandflies are similar to mosquitoes because they are the vector of diseases such as kala azar (visceral leishmaniasis). Sandfly fever, West Nile fever and a few other viruses are much less important.

Why are mosquito borne diseases important ?

Malaria, caused by the parasite Plasmodium,ranks fifth among all infectious diseases as a cause of mortality worldwide. It is an overwhelming public health problem and causes one or two million deaths every year. Eradication programmes, most notably by a DDT spraying programme in the 1950s and 1960s, were attempted but did not succeed in any long lasting way. The incidence of malaria today is far greater than it was 40 years ago. The reasons include resistance of the mosquito vector to DDT, and of the malarial parasite to the drug chloroquine, the most common anti-malarial in use for the last half century. Severe malaria is fatal if untreated or when improperly treated with chloroquine. Dengue fever, which is caused by a virus, is the other major problem. After starting in East Asia in the 1950s, the epidemic reached India in the 1990s in a major way. Dengue shock syndrome and dengue haemorrhagic fever reflect increased transmission and can be fatal. Unlike malaria, there is no effective therapy against dengue. Filariasis is caused by the worms Wuchereria and Brugia resulting in fever and swelling of the limbs. It requires intense exposure to mosquitoes, unlike malaria and dengue which can be contracted by a single mosquito bite. While not life threatening, it causes disability and chronic illness. Small flies (sandflies) transmit kala azar which has reached epi-demic proportions in Bihar and adjoining Uttar Pradesh. An emerging problem is resistance to anti-mony compounds, the traditional treatment. Japanese encephalitis is caused by a mosquito-transmitted virus. It is common in rice farming areas, especially where pigs abound (these serve as reservoir hosts). The disease can cause coma and death.

Where do mosquitoes breed ?

The three common species of disease-transmitting mosquitoes (Aedes, Anopheles and Culex) breed in water. Only the female mosquito feeds on human blood. Poor drainage following rains results in pools of stagnant water, which serve as an ideal breeding ground and the reason for the dramatic increase in mosquito borne diseases during the rainy season.

Are vaccines or preventive medicines available against mosquitoborne diseases ?

Unfortunately, the only disease for which a vaccine exists is Japanese-encephalitis. The vaccine isused in Korea but is expensive and not widely available in India. It is generally advised only for those who live in rural areas, especiany the areas, where pigs abound. Taking anti-malarials periodically (usually once a week) is effective in preventing malaria. This strategy is widely used by travellers from Western countries to malaria-endemic areas. Long term preventive therapy is not generally recommended for those native to and residing in India on account of concerns about side-effects and the emergence of resistance.

What are the symptoms of these diseases and how are they treated ?

The two most important diseases (malaria and dengue) cause fever, often without other symptoms. It is important to seek medical attention early on as both diseases can be rapidly fatal if diagnosis and treatment are delayed. Malarial parasites are becoming increasingly resistant to chloroquine and it is not advisable to use this drug in a person with malaria caused by the virulent falciparum strain.Luckily, several effective antimalarials (quinine, mefloquine and artemisinin derivative) are available against malaria. Many physicians, however, continue to prescribe chloroquine without either consuming the diagnosis of malaria or making sure the dangerous falciparum strain is not present. Dengue causes a non-specific fever but can develop into either a severe bleeding state or shock. Only supportive therapy exists for dengue and Japanese encephalitis. Filariasis usually causes fever and swelling of an extremity, and sometimes asthma like symptoms. It responds to the drug diethyl carbamazine.



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Mrs.Priya S (Assit.Sales Manager)
Balaji Electronics
S. No. 287/1, Near Bharathipuram Bus Stand, Pappampatti Road, Barathipuram
Coimbatore - 641402, Tamil Nadu, India
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