Monday, April 30, 2007

E. coli infection

E. coli infection
E. coli is a common type of bacteria that can get into food. Its medical term Escherichia coli. The strange thing about these bacteria — and lots of other bacteria — is that they're not always harmful to you. E. coli normally lives inside the intestines, where it helps to body break down and digest the food. Unfortunately, certain types (called strains) of E. coli can get from the intestines into the blood. This is a rare illness, but it can cause a very serious infection. Someone who has E. coli infection may have these symptoms: fever and chillsbad stomach cramps and belly painvomitingdiarrhea, sometimes with blood in it.

One very bad strain of E. coli was found in fresh spinach in 2006 and some fast-food hamburgers in 1993. Beef can contain E. coli because the bacteria often infect cattle. It can be in meat that comes from cattle. Most E. coli infections come from: Eating undercooked ground beef (the inside is pink)Drinking contaminated (impure) waterDrinking unpasteurized (raw) milkWorking with cattle Healthy beef and dairy cattle may carry the E. coli germ in their intestines. The meat can get contaminated with the germ during the slaughtering process. When beef is ground up, the E. coli germs get mixed throughout the meat.

The most common way to get this infection is by eating contaminated food. Human can be infected with the E. coli germ if they don't use a high temperature to cook beef, or if don't cook it long enough. When human eat undercooked beef, the germs go into stomach and intestines.

The germ can also be passed from person to person in day care centers and nursing homes. If the person have this infection and don't wash hands well with soap after going to the bathroom, this can give the germ to other people when you touch things, especially food.

People who are infected with E. coli are very contagious. Children shouldn't go to a day care center until they have 2 negative stool cultures (proof that the infection is gone). Older people in nursing homes should stay in bed until 2 stool cultures are negative.
E. coli infection

Sunday, April 01, 2007

Global warming and tropical diseases

Global warming and tropical diseases
Tropical diseases such as malaria, dengue fever, jaundice and encephalitis will most likely be on the rise due to global warming, as mosquitoes thrive on such climatic conditions.

Global warming would increase the temperature of areas where mosquitoes could not live previously and infect more people with diseases.

Studies on global warming had revealed this. The respiratory ailments and allergies due to increased heat, air pollutants, spore and dust could also be expected to rise.

Currently, about 45% of the global population live in high-risk areas, and with the increasing temperature and release of greenhouse gases, the figure may increase to 60%.

The studies also showed that the temperature in Malaysia would rise between 0.6°C and 4.5°C while the density of the greenhouse gases would double by the year 2060.

A 1,200sq km area of Malaysia’s coastline would be under water if early measures were not taken to address the effects of global warming.

The increase in sea level will create giant waves that can destroy mangrove swamps as well as flora and fauna.

The increase in temperature and drop in rainfall by 10% will reduce water availability by between 13% and 53% during a drought.
Global warming and tropical diseases

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