| African disease |
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| Monday, 30 October 2006 04:38 | |||||||
Page 1 of 2 Your Health in Africa - Diseases and Illness you need to be aware ofDiseases and illness throughout Africa have many similar symptoms. Most of the more serious diseases, vaccinations have been developed for as a form of protection. Vaccinations can have different side effects on different people, but if you are travelling to Africa you should always obtain specialist advice from your physician or travel clinic. Many countries have clinics that specialise in tropical diseases. The risk of contracting a number of the diseases can be greatly reduced if you are careful about where and what you eat and drink and who you come into direct contact with. Below is a list of some of the diseases you should be aware of when travelling in Africa Aids - HIV and other venereal diseases are widespread throughout Africa and it goes without saying that very strict precautions should always be taken. If there is a possibility the you will have sexual contact with an unknown individual you should take with you your own supplies of condoms. Hospital workers deal with AIDS victims on a regular basis and, contrary to popular belief, they do realise the danger involved in using unsterilised needles and in a town hospital or clinic you are unlikely to be at risk. But it worth bearing in mind that in remote areas, needle supplies could be low and therefore it is advisable to carry a few with you. Bilharzia (Schistosomiasis) - Many inland waters in Africa, especially the central region are infected with Bilharzia, which is caused by parasites that live and breed in specific freshwater snails. When these larvae are released into the water they are capable of penetrating unbroken skin of their human host. The disease is carried by humans and spread by people urinating in the water. Bilharzia is now curable but it is obviously best to take precautions. Steering clear of still water pools, dams and some lower lying rivers, using an insect repellent like DEET before swimming or paddling and after swimming drying off thoroughly with a towel will give you some protection. Cholera - A public health concern in most African countries and is a bacterial disease transmitted mainly through contamination of food and water. Person to person transmission is rare. If you are in an area with poor sanitation and hygiene, you should only drink canned or bottled carbonated drinks, with no ice, and beverages made with boiling water. It is recommended that you avoid eating raw and inadequately cooked fish or seafood and uncooked vegetables and salads.. Severe cases of cholera start with the onset of frequent watery stools and vomiting may also occur. The disease will quickly dehydrate you and it is therefore essential to ensure rapid replacement of lost body fluids and salts using an oral rehydration solution. If a severe case is left untreated, the patient becomes dehydrated with abnormally low blood pressure, suffering from muscle cramps, subnormal temperature, decreased urine output and shock eventually leading to coma. Diarrhoea and sickness - Even if you follow all the rules in the book, travellers diarrhea is unavoidable in most cases and nearly all travellers to Africa will experience some form of diarrhoea & sickness . Diarrhea can also occur along with abdominal cramps, nausea , vomiting and fever Usually you will only be laid up for a couple of days at the most and the best advise is to rest, avoid heavy greasy foods and drink lots of non-alcoholic fluids. Popular belief of a quick remedy is a liquid diet for 24 hours. If you do not recover within 7 days and are feeling weak you should seek medical attention, some cases, such as Giardia and Amoeba can only be cured by taking a prescribed course of antibiotics. Amoebic Dysentery - This can best be described as a form of travellers diarrhea and it is difficult to distinguish between the two. In most cases of dysentery white cells, mucus and occasional blood appear in the stool and a medical examination is necessary . Hepatitis A - This is a viral infection of the liver transmitted through poor personal hygiene, poor sanitation and intimate contact. Many people get the disease by drinking contaminated water or eating contaminated food stuffs but it is possible to catch the disease from your own hands to mouth contact, by touching a contaminated object or from the hands of an infected individual with poor sanitation habits. Again, by avoiding raw vegetables and salad, uncooked or undercooked fish, and boiling or sterilising all drinking water will reduce the chances of contracting the disease. The risk of infection is greater for older people and the symptoms include fever, lack of appetite, nausea, abdominal pains, dark urine and jaundice. Hepatitis A is very rarely fatal, even so you should consider being vaccinated before travelling to a high risk area, the vaccination has proved to be highly effective. Hepatitis B - Risk of Hepatitis B virus infection occurs through Africa, but it is only normally transmitted through blood, body fluid or sexual contact. As a general rule the vaccination will protect you but it is only necessary if you are likely to have medical treatment, including dental treatment using local facilities, or intend having sexual contact with residents. It is also recommended that healthcare workers are vaccinated. The symptoms usually are loss of appetite, extreme tiredness, nausea, vomiting and stomach pain. The disease is an infection of the liver and can last from a few weeks to several months. In some instances the disease is not curable and some people remain infected for the rest of their lives. Lassa Fever - Found particularly in West Africa. Epidemics have broken out in Nigeria, Zaire and Sierra Leone. This disease is highly contagious and can cause severe or fatal illness. The infection will start with increasingly high fever, vomiting, cough and general weakness which lasts for several days. Its' incubation period is 7 to 21 days. The exact cause and transmission of Lassa Fever is unknown and patients are isolated. Malaria The malaria parasite enters the human host when an infected Anopheles mosquito takes a blood meal. Inside the human host, the parasite undergoes a series of changes as part of its complex life-cycle. Its various stages allow plasmodia to evade the immune system, infect the liver and red blood cells, and finally develop into a form that is able to infect a mosquito again when it bites an infected person. Inside the mosquito, the parasite matures until it reaches the sexual stage where it can again infect a human host when the mosquito takes her next blood meal, 10 to 14 or more days later. Malaria symptoms appear about 9 to 14 days after the infectious mosquito bite, although this varies with different plasmodium species. Typically, malaria produces fever, headache, vomiting and other flu-like symptoms. If drugs are not available for treatment or the parasites are resistant to them, the infection can progress rapidly to become life-threatening. Malaria can kill by infecting and destroying red blood cells (anaemia) and by clogging the capillaries that carry blood to the brain (cerebral malaria) or other vital organs.
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| Last Updated on Saturday, 04 November 2006 06:06 |
