This cartoon by Paul Thomas from The Daily Express relates to the resurgence of swine flu in the UK. Health Protection Agency officials have confirmed the H1N1 virus that caused last year's global pandemic is circulating again this winter and has already caused the death of 10 people.
The scene is a doctor's surgery. A woman holding a baby asks the doctor: "How worried should we be about swine flu?" The joke is that the doctor is wearing a contamination suit, so the answer is obviously "very worried"!
GRAMMAR
The question form how + adjective is common in English. Here are some examples:
• How old are you?
• How late will you be?
• How big is your house?
• How deep is the ocean?
• How expensive is that watch?

