School (Villa de las Ninas), a Catholic boarding-school. The affected students had difficulty walking and were feverish and nauseated, some becoming partially paralyzed. Vinton, Virginia (2007) – An outbreak of twitching, headaches and dizziness affected at least nine girls and one teacher at William Byrd High School. The episode lasted for months amid other local public health scares. Tanzania (2008) – In September 2008, 20 girls at a school in Tabora started fainting while taking their final year exams. The mass fainting has been linked to neurosis related to the local practice of witchcraft. Afghanistan (2009–) – Starting around 2009, a spate of apparent poisonings at girls' schools across Afghanistan began to be reported, with symptoms including dizziness, fainting, and vomiting. The United Nations, World Health Organization and NATO's International Security Assistance Force carried out investigations of the incidents over multiple years, but never found any evidence of toxins or poisoning in the hundreds of blood, urine, and water samples they tested. The conclusion of the investigators was that the girls had a mass psychogenic illness. Despite these findings, Afghan officials often blame the incidents on the Taliban, accusing them of contaminating the school's water supply or using poison gas. Brunei (2010) – In April and May 2010, incidents of mass hysteria occurred at two all-girls secondary schools in Brunei. The most recent notable event happened on the 24 April 2014 in a public secondary school. The phenomenon caused a wave of panic among many parents, educators, and members of the community. Some of the students affected by the phenomenon claimed to have been possessed by spirits, or jinn, displaying histrionic symptoms such as screaming, shaking, fainting, and crying. Le Roy, New York (2011–12) – After 12 high school girls developed Tourette-like symptoms in 2011, their school was tested for toxins, and all other factors for their symptoms were ruled out. The case, and some of the girls and their parents, gained national media attention. In January 2012, several more students and a 36-year-old adult female came forward with similar symptoms. They were all diagnosed with conversion disorder. Sri Lanka (2012) – From November 15–20, 2012, incidents of mass hysteria occurred at 15 schools in Sri Lanka. More than 1,900 school children of 15 schools in Sri Lanka and five teachers were treated for a range of symptoms that included skin rashes, vomiting, vertigo, and cough due to allergic reactions