Mosquito net. It is a mesh , usually made of fabric , that provides important protection against blood- sucking mosquitoes or other dangerous or annoying insects . The fine and transparent construction prevents many insects from bothering the person .
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- 1 Features
- 2 The importance of mosquito nets
- 3 Insecticide-treated mosquito nets
- 1 Treatment of mosquito nets
- 2 How to determine the size (area)
- 3 How much liquid does each mosquito net absorb
- 4 Greater protection
- 4 Sources
Mosquito nets are a useful and practical tool to prevent insect bites . Insecticide- treated mosquito nets kill insects when they come in contact with them. Mosquito nets protect you not only from flying insects but also from trackers. The insecticide in the angeo or mesh does not poison the insect, creates a short circuit in its nervous system and cuts the respiratory system .
The mesh size should be large enough for air circulation , but as small as possible to keep mosquitoes out . Measuring 1.2 mm x 1.2 mm is the most common and recommended. However, for the effective protection of malaria, the most recommended measure is 120-200 holes per square inch.
Mosquito nets in polyester or polyamide are generally the lightest and most durable, they can be found with nets of different sizes and different thread thicknesses . On the other hand, cotton is susceptible to moisture, and weighs more when wet.
As for the shape of the net, it should obviously be wide enough to cover the person when sleeping without touching them. Rectangular mosquito nets offer more space around the person, as opposed to those with sloping edges or a pyramidal shape. In no way should the net be folded under the mattress . Screws , pins , tacks or hooks can be used to hang the mosquito net over the bed . Pillows or sheetsThey can be used to build a temporary barrier around the body by preventing it from touching the mesh. It is much more efficient if you buy a net that has already been submerged or sprayed with a high-quality insecticide like pyrethroid. The nets are pre-treated at the manufacturing plant and can last up to a year depending on the time of exposure to the sun or rain.
The importance of mosquito nets
When people sleep under mosquito nets, their protection against malaria is comparable in effectiveness to the fumigation of houses, with the difference that much less insecticide is used .
Insecticide-treated bed nets can cut childhood deaths by a fifth and malaria episodes by half.
The goal of sleeping under insecticide-treated mosquito nets is to prevent malaria in areas where infection is common. Governments and international organizations widely promote ITNs to reduce the harmful health effects of malaria . This review demonstrated that good quality studies of insecticide-impregnated bed nets markedly reduce childhood morbidity and mortality from malaria.
Insecticide-treated mosquito nets
The Malaria is undoubtedly the most important human disease transmitted by insects. The latest WHO calculations indicate that there are 2.5 million annual deaths from malaria, particularly among children in Africa . There are two main ways to reduce bites from malaria-carrying mosquitoes:
In the 1950s and 1960s, governments in many countries organized home spraying programs with insecticides, especially DDT . However, this was expensive to maintain in addition to the fact that mosquitoes became resistant to it. Modern pyrethroid insecticides work better than DDT; however, the use of insecticide-treated mosquito nets is currently recommended to reduce bites.
- Insecticide-treated mosquito nets
When people sleep under treated mosquito nets, their protection against malaria is comparable in effectiveness to the fumigation of houses, with the difference that much less insecticide is used. The pyrethroid chemicals used to treat mosquito nets (and curtains) are harmless even when they are in close contact with people. Mosquitoes are attracted to people by the air they breathe and by the smell and heat of the body. If the mosquito nets are not treated, the mosquitoes continue to look for a gap or a part where there is an arm or a leg in contact with the mosquito net in order to bite the person. However, when they touch a treated mosquito net, they die or leave.
Mosquito nets treatment
Mosquito nets are treated by immersing them in a mixture of liquid insecticide and water. This is done in five stages:
Treat mosquito nets outside the home. Put on long rubber gloves to protect the skin. If you do not have them, use large plastic bags. Give yourself a small measure, a large one and a receptacle for the mixture; This can be a source or a cube. Wash and dry all mosquito nets that have been used before treatment.
- Measurement and dilution Must be kept in mind …
The amount of mosquito nets to immerse. Its size. The amount of water they absorb. The amount of insecticide required.
How to determine the size (area)
In the case of a rectangular mosquito net, use the following formula; current figures are shown as an example:
Total area of the surface in square meters (m²). = 2 x sides (2 x 1.5m x 1.8m = 5.4m²). + 2 x ends (2 x 1.5m x 1.3m = 3.9m²). + 1 x height (1 x 1.3m x 1.8m = 2.34m²). (= 11.64 m²).
In the case of a circular mosquito net, stretch it on a flat surface. Measure the circular base and height:
Total surface area in square meters (m²) = base x height (3m x 2.2m = 6.6 m²)
How much liquid does each mosquito net absorb
Cotton mosquito nets absorb much more liquid than polyester mosquito nets. To discover how much liquid each mosquito net absorbs, an exact amount of water must be measured in a bucket or fountain, for example, 2 liters. Soak the mosquito net. Then squeeze into the receptacle and allow the screen to continue to drip into the receptacle until it stops. Measure the amount of water left. Subtract this amount from the two liters. Now you know how much liquid a mosquito net will hold. If they were all the same size and material, take this figure, multiply it by the number of mosquito nets to be treated and add a little more (10%) to be sure.
For example, if 1 mosquito net absorbs up to 300ml and you want to treat 15 mosquito nets, you will need:
300ml x 15 = (4500mls or 4.5 liters) + approx 10% (450mls) = approx 5 liters of liquid
- Immersion Mosquito nets in use must be clean and dry. Soak each mosquito net in the diluted insecticide until it is completely wet. Squeeze it well and allow it to drip into the receptacle until it stops. If multiple nets are being treated, each should be squeezed and stored in a plastic bag to take home and dry.
Drying Mosquito nets should be hung or laid on beds to dry. Putting them on the beds has the advantage of killing the bugs that are there. As they dry, turn them over a few times to ensure good distribution of the insecticide.
Carefully clean Containers and leftover insecticide should be placed in a hole latrine or buried in a pit. Never put them in a river or pond. Wash equipment, hands and clothing carefully with soap and water.
Mosquito nets must be treated twice a year. It is best not to wash them in the meantime, as this reduces the amount of insecticide.
Buying or making mosquito nets is expensive, but it is an investment that will protect the family for years. A single mosquito net can protect several young children who sleep together. If mosquito netting is very expensive, there is another type of thin cloth that can be used (for example, old saris cloth in Asia, muslin or fine cotton in Ethiopia).