Infectious diseases.(Made by Fernando Arévalo and Juan Pablo Castro).

Infectious diseases kill more people worldwide than any other single cause. Infectious diseases are caused by germs. Germs are tiny living things that are found everywhere - in air, soil and water. You can get infected by touching, eating, drinking or breathing something that contains a germ. Germs can also spread through animal and insect bites, kissing and sexual contact. Vaccines, proper hand washing and medicines can help prevent infections.
There are four main kinds of germs:
  • Bacteria - one-celled germs that multiply quickly and may release chemicals which can make you sick
  • Viruses - capsules that contain genetic material, and use your own cells to multiply
  • Fungi - primitive plants, like mushrooms or mildew
  • Protozoa - one-celled animals that use other living things for food and a place to live

Cholera: Cholera is a disease spread mostly through contaminated drinking water and unsanitary conditions. It is endemic in the Indian subcontinent, Russia, and sub-Saharan Africa. It is an acute infection of the intestines with the bacterium Vibrio cholerae. Its main symptom is copious diarrhea. Between 5% and 10% of those infected with the disease will develop severe symptoms, which also include vomiting and leg cramps. In its severe form, cholera can cause death by dehydration. An estimated 200,000 cases are reported to WHO annually.







Malaria: Malaria is a mosquito-borne disease that affects more than 500 million people annually, causing between 1 and 3 million deaths. It is most common in tropical and subtropical climates and is found in 90 countries-but 90% of all cases are found in Sub-Saharan Africa. Most of its victims are children. The first stage consists of shaking and chills, the next stage involves high fever and severe headache, and in the final stage the infected person's temperature drops and he or she sweats profusely. Infected people also often suffer from anemia, weakness, and a swelling of the spleen. Malaria was almost eradicated 30 years ago; now it is on the rise again.

Comentarios

Publicar un comentario

Entradas populares de este blog

Health related with the musculoskeletal system, the importance of exercising and keeping fit.(Made by Pablo Comendador).

Imagen
The musculoskeletal system provides form, support, stability, and movement to the body. It is made up of the bones of the skeleton, muscles, cartilage, tendons, ligaments, joints, and other connective tissue that supports and binds tissues and organs together. The musculoskeletal system provides form, support, stability, and movement to the body. It is made up of the bones of the skeleton, muscles, cartilage, tendons, ligaments, joints, and other connective tissue that supports and binds tissues and organs together. The Benefits of Exercise There are many benefits of regular exercise and maintaining fitness and these include: Exercise increases energy levels.Exercise improves both the strength and the efficiency of your cardiovascular system to get the oxygen and nutrients to your muscles.  When your cardiovascular system works better everything seems easier and you have more energy for the fun stuff in life.Exercise improves muscle strength.Staying active...
Leer más

Health related with the organ systems in charge of nutrition.(Made by Juan Pablo Castro).

Digestive system A balanced diet and regular exercise are the keys to good health, but did you know these lifestyle habits can also help regulate your digestive tract? For better digestive tract health, make these changes to your diet: Eat plenty of fiber; think fruit, vegetables, and whole grains. Eat three to five servings of fish each week. Stay well hydrated — water is best. Avoid high-fat, processed, and fried foods. Respiratory system: You can promote respiratory health in many ways beyond not smoking. Whether using these strategies preventatively or to reduce symptoms of a condition such as chronic obstructive pulmonary disease, you can make a positive difference in the health of your respiratory system. -Exercise regularly -Eat a diet rich in nutrients necessary for a healthy respiratory system. -Drink plenty of water to help thin mucus secretions that accumulate in your lungs, facilitating easier breathing. Circulatory system:  It is i...
Leer más