Kaiser noted it's not too late to get vaccinated against influenza.
Traditionally, the H1N1 component is better at halting the spread of that strain of the virus, compared to H3N2, which has a greater propensity to genetically mutate, often in the manufacturing process.
A young child who died after testing positive for influenza is the first pediatric-flu associated death in Riverside County this flu season, health officials said Wednesday.
Dr. Siiri Bennett, state epidemiologist at the Maine CDC, said that flu season is unpredictable, and can peak at any time.
The HSE said that in an average year, around 60-120 deaths are directly linked to flu and 300-450 are indirectly linked to it.
With illness spreading and months of flu season left to go, experts still recommend getting a flu shot. "It's just a slow upward, so we're only at the beginning of flu season right now".
"While most people will get better themselves from flu, anyone who is concerned about their condition should telephone their GP or an out of hours medical service so they can arrange to be treated in a way that does not put others at risk", he explained.
The flu is mainly affecting children and the over 65s, said HSE public health specialist Dr Kevin Kelleher.
A woman prepares to receive a flu shot on January 22, in San Francisco.
The most effective way to protect against the flu is to get a dose of seasonal flu vaccine.
THE HSE has urged Limerick people in at-risk groups for the flu to get vaccinated, as the number of cases are expected to increase in the coming weeks.
Note to readers: This is a corrected story. This was mostly among children ages 0-4 years old. It also misstated the percentage of children that make up B.C.'s population.