Doctors and researchers said the moves will make it harder to detect potentially dangerous changes. If the virus continues to ...

Though flu activity has gone down, the CDC expects several more weeks of influenza. Data suggests the season has peaked, but flu-related medical visits, hospitalizations and deaths remain elevated.

Though flu activity has gone down, the CDC expects several more weeks of influenza. Data suggests the season has peaked, but flu-related medical visits, hospitalizations and deaths remain elevated.

Though flu activity has gone down, the CDC expects several more weeks of influenza. Data suggests the season has peaked, but flu-related medical visits, hospitalizations and deaths remain elevated.

Though flu activity has gone down, the CDC expects several more weeks of influenza. Data suggests the season has peaked, but flu-related medical visits, hospitalizations and deaths remain elevated.

Though flu activity has gone down, the CDC expects several more weeks of influenza. Data suggests the season has peaked, but flu-related medical visits, hospitalizations and deaths remain elevated.

Though flu activity has gone down, the CDC expects several more weeks of influenza. Data suggests the season has peaked, but flu-related medical visits, hospitalizations and deaths remain elevated.

Though flu activity has gone down, the CDC expects several more weeks of influenza. Data suggests the season has peaked, but flu-related medical visits, hospitalizations and deaths remain elevated.

Though flu activity has gone down, the CDC expects several more weeks of influenza. Data suggests the season has peaked, but flu-related medical visits, hospitalizations and deaths remain elevated.

Though flu activity has gone down, the CDC expects several more weeks of influenza. Data suggests the season has peaked, but flu-related medical visits, hospitalizations and deaths remain elevated.

Though flu activity has gone down, the CDC expects several more weeks of influenza. Data suggests the season has peaked, but flu-related medical visits, hospitalizations and deaths remain elevated.