The vaccine, called mFLUSIVA, is expected to be a versatile new option for people seeking protection from influenza and an important step forward for the widespread adoption of mRNA technology. 

Flu vaccines must be updated annually to best match circulating strains of the virus. Vaccines made with the Nobel Prize-winning mRNA technology are faster to manufacturer than other types.

At least 100 people have died from the flu this season in Illinois, with 77 of those deaths occurring this month alone, according to the Illinois Department of Public Health.

The U.S. Department of Health and Human Services will recommend fewer vaccines for most American children, health officials said Monday.

Flu activity in suburban Cook County jumped from “low” to “high” during the week ending in Dec. 20, according to health officials. Chicago’s public health department reported “high” levels of emergency department visits and hospitalizations for flu late last week.

Chicago and suburban Cook County residents will have opportunities Saturday and through the next several months to receive free flu and COVID-19 shots, as local public health departments roll out their immunization outreach efforts.

Federal data released Friday, for example, shows COVID-19 is trending up in many parts of the country, with emergency department visits up among people of all ages.

The U.S. Department of Health and Human Services has adopted a recommendation to remove thimerosal from all influenza vaccines distributed in the United States, even though there is no clear evidence of harm from the mercury-based preservative.

The preservative, thimerosal, has long been used in certain vaccines that come in multi-dose vials, to prevent contamination as each dose is withdrawn.

There were about five times as many emergency department visits for flu as there were for COVID-19, according to IDPH data during the week ending Jan. 25.

Health officials have said the person was older than 65, had underlying medical problems and had been in contact with sick and dead birds in a backyard flock.

While the flu poses minimal immediate risk to humans, experts warn that the virus’ rapid spread among birds and mammals could increase the likelihood of mutations, potentially creating a strain more transmissible to humans.

The Illinois Department of Natural Resources, Illinois Department of Public Health and Illinois Department of Agriculture issued a joint statement Friday afternoon, reminding the public to use caution around waterfowl or other wild birds.

Public health officials are encouraging residents to get vaccinated as soon as possible so they can get some protection ahead of holiday gatherings.

Forecasts from the U.S. Centers for Disease Control and Prevention suggest that this respiratory disease season will be similar to last year’s — which brought more than 20 hospitalizations for every 100,000 people in one week at its peak — and far worse than in pre-pandemic years.

The CDC recommends people ages 6 months and older get the updated COVID-19 and flu vaccinations to get the best protection from current circulating COVID-19 variant strains and flu viruses.