Cryptosporidiosis is also known as

crypto, is a parasitic disease

caused by Cryptosporodium,

a protozoan parasite of the

tribe Apiocomplexa.

The symptoms manifests itself from two to ten days after infection, with an average of seven days and can last up to two weeks, or in some cases up to a month. Other symptoms include nausea, vomiting and dehydration. The individuals who are asytomatiska (have no symptoms) are still infectious and can therefore transmit the infection to others. Even after symptoms have finally subsided, an individual remains infectious for a few weeks.

When Cryptosporidium spreads beyond the intestine, especially in patients with AIDS, it can reach the lungs, middle ear, pancreas and stomach.The parasite can also infect the biliary tract.

Cryptosporidiosis occurs worldwide. It causes 50.8% of the water-borne diseases attributed to parasites

1987 was 13,000 people in Carrolton,

Georgia, ill with cryptosporidiosis. This

was the first report on the spread of a

municipal water systems that met all

state and federal standards for drinking

water.

In March 2007, there were a suspected

outbreak in Galway, Ireland. The source for

much of the region, Lough Corrib, was

suspected of being infected by the parasite.

The population of 90,000 people, including

areas for both Galway city and surrounding

counties were advised to boil water before

drinking, cooking and brushing teeth. On 21

March 2007 confirmed that the city and the

county's water supply was contaminated by

the parasite. Area's water supply finally got an

approval on 20 August, five months after the

Cryptospridum first detected. Approximately

240 known cases of disease-bearing persons

were reported, but according to experts, the

real figure would have been right up to 5000.

In November 2010 reported 4500 cases

of cryptosporidiosis in Ostersund. The

source of contamination is tap water.

Based on the number of cases,

estimates the local authorities, the total

number affected to between 3000-9000

people.

Cryptosporidium is highly resistant to klordesinfiktion, Cryptosporidium is highly resistant to klordesinfiktion, with enough high concentrations and contact time, with enough high concentrations and contact time, disabled Cryptosporidium by chlorine dioxide and ozone disabled Cryptosporidium by chlorine dioxide and ozone treatment. The the required levels of chlorine normally treatment. The the required levels of chlorine normally preclude the use of chlorine disinfection as a reliable preclude the use of chlorine disinfection as a reliable method to control Cryptosporidium in drinking water. method to control Cryptosporidium in drinking water. Ultraviolet (UV) light treatment at relatively low doses Ultraviolet (UV) light treatment at relatively low doses inactivate Cryptosporidium. Water Research Foundation-inactivate Cryptosporidium. Water Research Foundation-paid research discovered the original UV's ability to paid research discovered the original UV's ability to inactivate Cryptosporidium.inactivate Cryptosporidium.

In year 2000 came the first wave of

cryptosporidium in Sweden's history. In

Ostersund they found the parasite

Cryptosporidium in the water and then they

had to boil their water for about 3 months before the problem

was fixt. The year 2011 it was skellefteå who

got to be the other city in swedens history to

experienced the cryptosporidium

parasite, it took about one-two months for

skellefteå to get their water purified.