Research has found higher levels of immunity to the virus in Edinburgh and Aberdeen compared to Glasgow and Inverness.
Young people in the west and pensioners in the Highlands appear to be particularly vulnerable.
The next wave of swine flu could hit hardest in Glasgow and the Highlands, experts have warned.
Research has found higher levels of immunity to the virus in Edinburgh and Aberdeen compared to Glasgow and Inverness.
Young people in the west and pensioners in the Highlands appear to be particularly vulnerable.