Flu Symptoms Nz 2025. If a person is randomly selected to be part of the survey, they are sent an invitation text. In older children and adults, the illness characteristically begins abruptly with fever and a variety of clinical symptoms, including chills, malaise, headache, myalgia, non.
A fever that starts suddenly (a temperature more than 38. It can cause symptoms such as fever, chills, muscle or body aches, headache, runny or stuffy nose, cough, sore throat, upset stomach, vomiting or diarrhoea.
