Common symptoms include fever, headache, chills, runny nose, dry cough, and pain in the body and muscles.
Pulmonologist Professor Dr Javed Khan said influenza can affect people of all ages, but those with pre-existing medical conditions need to take extra precautions.
Health experts said children experiencing more severe influenza may also develop nausea, vomiting and diarrhoea.
Doctors have advised people showing symptoms to maintain distance from others, wash their hands frequently and pay particular attention to hygiene to help prevent the spread of infection.
Experts have also urged elderly people, children and individuals with existing health conditions to take additional precautions. Those who develop influenza-like symptoms have been advised to consult a doctor rather than taking medication on their own.