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There is good news for people with 
. The USA has approved a nasal spray to treat 
 allergic reactions. Up to 40 per cent of people suffer from an 
. Around 11 per cent of people have a food allergy. Allergies can cause a life-threatening 
 called anaphylaxis. This is caused by allergens like peanuts, dairy 
, bee 
, and other things. People who suffer anaphylactic 
 can have different 
. These include low blood 
 and vomiting. Some people get a swollen 
 or throat. This can make breathing difficult and lead to death.