With the peak of flu season in full swing, cases of influenza are increasing across the region and state.

New numbers released Friday revealed 94 people sickened by confirmed flu between Jan. 5 and 12 at Southcoast Health’s three hospitals.

A high concentration was seen from St. Luke’s Hospital in New Bedford with 42 flu sufferers for the week. Of those, 20 people were hospitalized with the virus.

Another 52 cases, including six hospitalizations, were confirmed at Charlton Memorial Hospital in Fall River and Tobey Hospital in Wareham.

“Our flu season is clearly here,” said Dr. Robert J. Caldas, chief medical officer of Southcoast Hospitals Group.

The week of Jan. 5 to 12 had a total of 94 confirmed cases among the three sites, in comparison to the week before with 36 cases, 20 before that and just eight during the first week of December.

So far, a total of 247 people have been treated for flu this season at Southcoast.

In Massachusetts, 914 people have been treated for flu this season, according to data released this week. The flu season officially starts in October with the peak in December to February.

Caldas said influenza can be dangerous to some groups, including infants, senior citizens, pregnant women and those with certain medical conditions and compromised immune systems.

St. Anne’s Hospital spokeswoman Anne Ferreira said doctors there have also seen a spike in flu cases, but did not have numbers available.

Influenza Type A — a type of virus that can cause a pandemic, according to the CDC — has been to blame for nearly all flu cases in the past two weeks.

Caldas said the flu virus in this area will likely rise in the coming weeks, especially with cold temperatures keeping families inside to pass the virus to one another.

“I would emphasize getting a vaccination,” Caldas said. “Take advantage of it.”

Those with flu-like symptoms should get to their primary care physician or urgent care center within 24 to 48 hours for a prescription of anti-viral medication that is “very, very effective,” Caldas said. Medication will not be as effective if the wait is more than 48 hours.

Flu symptoms can include a fever, runny nose and eyes, body aches, coughs, sensitivity to light and general malaise.

To stay healthy, Caldas said to practice good hand washing hygiene and use the inner elbow to cover coughs and sneezes.

And, if sick with the flu: “Stay home from work and parties where it can be spread to others,” Caldas said.

Standard-Times staff contributed to this report.