The flu friend must show their own ID as well as that of the patient. The authorisation number and ID information will be checked to ensure it matches the information provided when the assessment of symptoms was completed.
Acceptable forms of ID are:
a utility [...]

Yes, because the virus can mutate (change). If you become infected with the swine flu virus, your body produces antibodies against it, which will recognise and fight off the virus if the body ever meets it again. However, if the virus mutates, your immune system may not [...]

Can my pet catch swine flu?
There is currently no evidence that pets could get this new strain of flu. The swine flu virus appears to be passing only from person to person or from human to swine. In general, flu viruses commonly infect just one species; for example, dogs [...]

Should I go to work or school if I have been in contact with someone who I know has swine flu?
Yes, as long as you do not have flu-like symptoms. If you are feeling well, you should continue your normal activities, including going to school or work.
[...]

The first case of resistance of the swine flu virus to the antiviral drug oseltamivir (Tamiflu) has now been reported in England.
The resistant virus was identified in a patient with a weakened immune system. Although the virus was resistant to Tamiflu, it was susceptible to the antiviral zanamivir (Relenza) and, following treatment, the patient recovered [...]

How does swine flu cause death?
Like any other type of flu, people can die from swine flu if they develop complications, such as pneumonia.

As with any sort of flu, how bad the symptoms are and how long they last will vary depending on treatment and individual circumstances. Most cases reported in the UK to date have been relatively mild, with affected people starting to recover within a week.

The symptoms of swine flu are expected to be similar to the symptoms of regular seasonal flu. People with swine flu typically have a fever or high temperature (over 38°C/100.4°F) and two or more of the following symptoms:
unusual tiredness,
headache
runny nose,
sore throat,
shortness of breath or cough,
loss of appetite,
aching muscles,
diarrhoea or vomiting.

One of the most common complications of any type of flu is a secondary bacterial chest infection, such as bronchitis (infection of the airways).
This can become serious and develop into pneumonia. A course of antibiotics will usually cure this, [...]

For most people, the illness has been mild and self-limiting. The virus has caused severe illness in a minority of people, most of whom had an existing serious condition. NHS staff are well trained in treating people who are in hospital with swine flu. They can [...]