Health officials are bracing for a second wave of swine flu this fall, which is expected to be far worse than what we've already seen.

Officials say they've been able to learn from the first wave of the virus and are able to identify the people most at risk, including those with chronic medical conditions, people who are obese, pregnant women and those with compromised immune systems.

"We would encourage people in those categories to seek medical attention early. These are individuals who are likely to benefit most from an early assessment and perhaps early treatment if appropriate," said Dr. Isra Levy, Ottawa's chief medical officer of health.

Federal health officials have said those who want to be vaccinated for swine flu should be able to access that vaccine by late fall. A list of priority groups should be ready by September. Meanwhile, the regular flu vaccine will be available by the end of October.

Since the virus first emerged this spring, Ottawa has reported four swine-flu related deaths; all of the victims had underlying medical conditions.

So far, 361 residents have tested positive for swine flu. Sixty-nine people have been admitted to hospital for the virus; half of them are younger than 20 years old.

Meantime, residents are being reminded to take precautions, such as frequently washing their hands and coughing or sneezing into a sleeve, to protect themselves from the virus.

Symptoms of swine flu may include:

  • fever
  • cough
  • shortness of breath
  • muscle aches
  • fatigue
  • severe headache
  • sore throat
  • lack of appetite

Residents who have general questions about the virus are asked to call the Eastern Ontario Health Unit at 613-933-1375 or 1-800-267-7120.