"We see it three months before and three months after, and this is the time of the season where we start to see an up-tick, but we have seen quite a bit the last three weeks of the Influenza virus", she said.
Reports that this year's flu vaccine is not effective against the strain that's circulating most widely: Type A, subtype H3N2.
Flu season lasts from October to May.
Lisa Berger, Toronto Public Health's associate medical officer of health, says it's still too early to predict how the rest of the season will go.
"These symptoms include coughs, runny nose, fever, sore throat, fatigue, aches and pains". He told HuffPost UK: "The virus is most likely here already and the flu figures are going up, but are still below that of an epidemic".
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Anyone with an appointment to a physician practice/clinic, the Emergency Center, or other outpatient location will be asked by registration personnel if they are experiencing flu-like symptoms.
Battle: The MMA fighter and boxer said that he had been left shaken by the illness, which has affected many people in Ireland this festive season.
It is urging people, particularly those in high-risk groups, to get vaccinated. In New York, there were 19 pediatric influenza deaths over the past three seasons and almost 11,200 flu-related hospitalizations each season.
The virus targeted by the flu vaccines supplied for this season do not match the dominant virus that is circulating, reducing their efficacy, the Centers for Disease Control (CDC) said yesterday. So if the flu is persisting, it's a good indication to seek medical help. While normally it takes at least six months to produce a flu vaccine, the World Health Organization (WTO) convenes a meeting every February, at which it announces the vaccine viruses in the Northern Hemisphere that year. The department said public health officials are concerned. Before the person feels ill enough to become sick, he or she may have been spreading the virus for a week.
New York State Health Commissioner Dr. Howard Zucker declared last week that influenza is now prevalent in the state, triggering a requirement that health care workers who have not been immunized must wear masks in areas where patients are typically present. Those 18 years of age and older may also be able to get their influenza vaccine at a local pharmacy.
Dr. Mendoza says influenza is contagious up to one day before some has symptoms, and can remain contagious until about a week after the patient begins to have symptoms.