The horror meningitis outbreak that has caused the death of two people, including one university student, and left a further 11 people "seriously ill" in hospital is understood to be linked to a "social event" at the University of Kent. The UK Health Security Agency (UKHSA) said it was notified of 13 cases with signs and symptoms of meningitis (inflammation of the lining of the brain and spinal column) and septicaemia (blood poisoning) from Friday to Sunday (March 13-15).

Most of those unwell are aged between 18 and 21 and are understood to be students at the university in Canterbury. The outbreak is thought to be linked to a "social event," but the UKHSA would not comment on suggestions that many of those infected had been to the same nightclub. More than 30,000 students, staff and their families have been contacted by the agency to inform them of the deaths. It said it is arranging antibiotics for some students in the Canterbury area following the outbreak, though the specific strain has yet to be identified.

The UK Health Security Agency website says: "Meningococcal meningitis and septicaemia are rare but severe diseases that can kill or leave people with life changing disabilities and health problems. Both meningitis and septicaemia can lead to sepsis. Teenagers, and university students in particular, are at increased risk.

"The bacteria that cause these diseases are usually spread by close or lengthy contact. Most cases happen individually but outbreaks sometimes occur in schools or where people share living space, such as university halls."

The most important signs to look out for are:

1. Fever
2. A very bad headache
3. Vomiting
4. Stiff neck
5. Dislike of bright lights
6. Rash that does not fade when compressed with a glass
7. Confusion, delirium
8. Severe sleepiness, losing consciousness

Bacterial meningitis requires urgent treatment at hospital with antibiotics. Some 10% of bacterial cases are fatal. Of those who survive, one in three suffer complications, including brain damage and hearing loss. Limb amputation is a potential side effect if septicaemia occurs.

Viral is rarely life-threatening but can cause long-lasting effects, such as headaches, fatigue and memory problems. Thousands of people suffer from viral meningitis every year in the UK. Treatment focuses on hydration, painkillers and rest.

Most UK teenagers and young adults born from September 1996 will have been offered MenACWY vaccine whilst at school, but they remain eligible up to their 25th birthday. The MenACWY vaccine is very effective at preventing meningococcal meningitis and septicaemia caused by MenA, MenC, MenW and MenY. However, this vaccine cannot prevent all forms of meningitis and septicaemia.

Rosie Duffield, MP for Canterbury, said: "Some really tragic news this weekend from our university in Canterbury. Rumours have been flying around for a few days, but you always hope for better news to come. Thinking very much of those who loved these students."

The University of Kent has confirmed that a student was one of two people who have died as a result of meningitis in the Canterbury area.

“We are deeply saddened to confirm that one student from the University of Kent has died following a case of invasive meningitis,” a statement said. “Our thoughts are with the student’s family, friends and the wider university community at this extremely difficult time.

“The safety of our students and staff remains our highest priority. We are working closely with public health teams and are in touch with staff and students to ensure they get the advice and support they need.

“We will continue to monitor the situation and keep our community informed.”