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Healthy children can learn

The United Nations Cyber Schoolbus tells us about essential issues surrounding health.

FACT :

Infectious diseases are the leading cause of death in the world. Of 52.2 million deaths in 1997, at least 17.3 million were due toinfectious diseases.

FACT:

Thirty new diseases have been identified over the past 20 years, among them the deadly Ebola and HIV/AIDS.

FACT:

In the long history of struggle against infectious diseases, humans have only managed to conquer one: smallpox, which wasdeclared eradicated in 1980.

HOPE:

Polio, already eliminated from the western hemisphere, is targeted for global eradication by the year 2000.

What will world health look like at the end of the millennium?

Who will be infected, who's likely to be safe? What is the relation between poverty and disease? Will we eradicate otherdiseases? What are these new viruses?

But wait, let's take it from the beginning. What are infectious diseases anyway? What are viruses and bacteria? How do we defendagainst them?

These small units of study shall provide you, the teacher, with some crucial information you need to be an effectivecaregiver for the children you teach.

Protection against insects - mosquito nets and checking for ticks

This site describes precautionary measures against malaria: Preventing Malaria

Mosquito Nets

Insect-borne infections, such as malaria, can be reduced 10-20 times by mosquito netting. An ideal mosquito net would have amesh size of 1.2mmX1.2mm and be made of synthetic material or cotton. The net should be wide enough to cover the body but should not touch the body, asinsects may then reach the skin through the mesh. The net should completely surround the human so that there are no open gaps through which the insectsmay enter. Holes should be checked for often, and the net should not be washed. If sprayed with insecticide every six months, the net is much moreeffective as it then kills any mosquitoes who do enter. For this reason, people already infected with insect-borne illnesses should sprayinsecticide on their mosquito nets every two weeks, as this will kill any mosquitoes that do feed off the infected bodies and become diseasecarriers. Permethrin is a safe insecticide that paralyzes mosquitos.

Ideally the nets should be impregnated with the insecticide and would last for six months.

Checking for Ticks

One advantage about ticks is that they do not fly; they can only attach themselves to humans who brush against them. Ticks are mostlikely to be found in grassy or shrubby areas. They are black and round. If in a tick-infested area, be sure to visually check everyone before leaving. Donot miss hidden places such as under the armpits, or behind the knees. If you find a tick, detach it immediately to prevent further penetration of theskin. If too resistant to hand plucking, use tweezers to pull it out. Then wash the surrounding skin with soap and water.

Protection against insects - wearing proper clothes

Wearing Proper Clothing

Questions & Answers

A golfer on a fairway is 70 m away from the green, which sits below the level of the fairway by 20 m. If the golfer hits the ball at an angle of 40° with an initial speed of 20 m/s, how close to the green does she come?
Aislinn Reply
cm
tijani
what is titration
John Reply
what is physics
Siyaka Reply
A mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of 8.0 m/s. During its fall, how much work is done on the mouse by air resistance
Jude Reply
Can you compute that for me. Ty
Jude
what is the dimension formula of energy?
David Reply
what is viscosity?
David
what is inorganic
emma Reply
what is chemistry
Youesf Reply
what is inorganic
emma
Chemistry is a branch of science that deals with the study of matter,it composition,it structure and the changes it undergoes
Adjei
please, I'm a physics student and I need help in physics
Adjanou
chemistry could also be understood like the sexual attraction/repulsion of the male and female elements. the reaction varies depending on the energy differences of each given gender. + masculine -female.
Pedro
A ball is thrown straight up.it passes a 2.0m high window 7.50 m off the ground on it path up and takes 1.30 s to go past the window.what was the ball initial velocity
Krampah Reply
2. A sled plus passenger with total mass 50 kg is pulled 20 m across the snow (0.20) at constant velocity by a force directed 25° above the horizontal. Calculate (a) the work of the applied force, (b) the work of friction, and (c) the total work.
Sahid Reply
you have been hired as an espert witness in a court case involving an automobile accident. the accident involved car A of mass 1500kg which crashed into stationary car B of mass 1100kg. the driver of car A applied his brakes 15 m before he skidded and crashed into car B. after the collision, car A s
Samuel Reply
can someone explain to me, an ignorant high school student, why the trend of the graph doesn't follow the fact that the higher frequency a sound wave is, the more power it is, hence, making me think the phons output would follow this general trend?
Joseph Reply
Nevermind i just realied that the graph is the phons output for a person with normal hearing and not just the phons output of the sound waves power, I should read the entire thing next time
Joseph
Follow up question, does anyone know where I can find a graph that accuretly depicts the actual relative "power" output of sound over its frequency instead of just humans hearing
Joseph
"Generation of electrical energy from sound energy | IEEE Conference Publication | IEEE Xplore" ***ieeexplore.ieee.org/document/7150687?reload=true
Ryan
what's motion
Maurice Reply
what are the types of wave
Maurice
answer
Magreth
progressive wave
Magreth
hello friend how are you
Muhammad Reply
fine, how about you?
Mohammed
hi
Mujahid
A string is 3.00 m long with a mass of 5.00 g. The string is held taut with a tension of 500.00 N applied to the string. A pulse is sent down the string. How long does it take the pulse to travel the 3.00 m of the string?
yasuo Reply
Who can show me the full solution in this problem?
Reofrir Reply
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Source:  OpenStax, Health education course. OpenStax CNX. Feb 03, 2006 Download for free at http://cnx.org/content/col10330/1.1
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