The first parent at Alleyn's School was confirmed today as having swine flu, along with four new pupils.

This brings the number of pupils at the school diagnosed with the H1N1 virus to 10.

The leading co-educational independent school in Dulwich, which has 1,118 children drawn from across south London, has been closed for the week with all pupils and staff offered Tamiflu in a bid to contain the spread of the virus.

Despite the new cases a statement on its website at 3.30pm said plans were well in hand to reopen the school on Monday.

The age of the latest children confirmed to have the virus is still unknown, as is whether they caught the virus at the school or elsewhere.

The school's catchment includes Streatham, Wandsworth, Wimbledon and east London.

The Health Protection Agency (HPA) has refused to reveal how many people are being tested in south London following the cases at Alleyn's and the two cases at Dolphin School in Battersea.

An HPA spokesman said: "Because the vast majority of cases test negative for swine flu, we do not want to cause alarm in local communities by focusing unneccessarily on these figures."

The HPA is only testing those who have recently returned from America or Mexico, or people in very close contact with a probable or confirmed case (it defines this as being within one metre of the person for an hour or more).

Testing is not being carried out on anyone else who may have flu like symptoms similar to those of swine flu.

A spokesman at NHS Wandsworth said this afternoon that many pupils at Alleyn's have been swabbed for testing and more cases are expected over the weekend.

Children at Alleyn's whose exams were postponed this week are now preparing to take them next week.

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