During sub-zero weather exposed fingers, noses and ears can suffer frostbite within 10 minutes.
Minnesota saw many pertussis cases in 2014, though far short of the number during the massive outbreak in 2012.
Minnesota had an exceptionally severe flu season two years ago. But so far this season is worse and hitting sooner, officials say.
Minnesota's new radon disclosure law has led to a big jump in the number of homes equipped with radon removal systems.
Many Minnesota hospitals are getting slammed with sick people suffering from influenza and other viruses, and a second child under the age of 18 has died from influenza.
The Centers for Disease Control has warned that this year's vaccine could provide less protection than usual against the H3N2 subtype of influenza A that is circulating widely. Some flu experts say that message is confusing.
State health officials noted 65 recent hospitalizations and 19 schools that reported outbreaks of influenza-like illnesses.
Weather conditions are trapping fine particle pollutants near the ground and hurting air quality.
Public health officials are urging people to get vaccinated against the flu this week so they have some protection against the virus in time for the holidays.
Minnesota recorded its first pediatric death from flu this season and cases of the flu are increasing rapidly in southern Minnesota, the metro area and in the central part of the state.
Federal health officials on Thursday warned that the flu season may be a bad one.
Five weeks after Minnesota health officials began tracking travelers arriving from Ebola-affected countries, each of the 120 people screened has been deemed low-risk and none has developed Ebola symptoms.
Minnesota health officials are urging people at high-risk for the disease to take advantage of those opportunities and get tested earlier.
A Minneapolis-based humanitarian organization is sending a team of medical responders to Liberia to help fight Ebola.
The agency was required to destroy all newborn blood spots and screening results created before Nov. 16, 2011, because the Health Department had not obtained parental permission to store the material.