By early September 2005, over 3,800 people reported symptoms of a Cryptosporidium infection. The "Sprayground" was ordered closed for the season on 15 August. In October 2005, the Gwynedd and Anglesey areas of North Wales, the United Kingdom, suffered an outbreak of cryptosporidiosis. The outbreak may have been linked to the drinking water supply from Llyn Cwellyn, but this is not yet confirmed. As a result, 231 people fell ill and the company Welsh Water (Dwr Cymru) advised 61,000 people to boil their water before use. In March 2007, a suspected outbreak occurred in Galway, Ireland, after the source of water for much of the county, Lough Corrib, was suspected to be contaminated with the parasite. A large population (90,000 people), including areas of both Galway City and County, were advised to boil water for drinking, food preparation and for brushing teeth. On 21 March 2007, it was confirmed that the city and countys water supply was contaminated with the parasite. The areas water supply was finally given approval on 20 August 2007, five months after Cryptosporidium was first detected. Around 240 people are known to have contracted the disease; experts say the true figure could be up to 5,000. Hundreds of public pools in 20 Utah counties were closed to young children in 2007, as children under 5 are most likely to spread the disease, especially children wearing diapers.
Differential diagnosis
Infections: urinary tract infection, candidiasis, herpes, HPV
Inflammation: lichen planus
Neoplasm: Pagets disease, vulvar carcinoma
Neurologic disorder: neuralgia secondary to herpes virus, spinal nerve injury

Treatment
There are a number of possible treatments with none being uniformly effective. Treatments include:

Lifestyle
A number of lifestyle changes are often recommended such as using cotton underwear, not using substances that may irritate the area, and using lubricant during sex. The use of alternative medicine has not been sufficiently studied to make recommendations. Counseling
Education and accurate information about vestibulodynia: Gynaecologist-led educational seminars delivered in a group format have a significant positive impact on psychological symptoms and sexual functioning in women who have provoked (caused by a stimulus such as touch or sexual activity) vestibulodynia. Provoked vestibulodynia, whilst similar in some respects, is different to vulvodynia which this article refers to. Biofeedback, physical therapy and relaxation: Biofeedback, often done by physical therapists, involves inserting a vaginal sensor to get a sense of the strength of the muscles and help a patient get greater control of her muscles to feel the difference between contraction and relaxation. Sessions are linked with at-home recommendations including often Kegel exercises (e.g., hold for 9 seconds, relax for 30 seconds, for 10–15 sets), and relaxation. Medications
A number of medications have been used to treat vulvodynia. Evidence to support their use, however, is often poor. These include creams and ointments containing lidocaine, estrogen or tricyclic antidepressants. Antidepressants and anticonvulsants in pill form are sometimes tried but have been poorly studied. Injectable medications included steroids and botulinum toxin have been tried with limited success.