Since the condition was first recognized by CDC in 2014, the agency has confirmed 362 cases.
According to the CDC 127 people are believed to be sick with the illness. Sixty-five suspected cases are being investigated. But the data reported Tuesday represents "a substantially larger number than in previous months this year", Messonnier said.
There is no specific treatment for the disorder, and long-term outcomes are unknown.
CDC officials say they haven't found the cause.
US health officials on Tuesday reported a jump in cases of AFM.
It is a rare condition that is popping up around the country, including right here in the Midwest.
Messonnier stressed that while she understands how frightening this situation is for parents, they should remember that the infections are, in fact, rare.
Parents should seek immediate medical care for kids exhibiting AFM symptoms, Messonnier said at the press conference, according to STAT. Officials said some patients diagnosed with AFM recover quickly, while others need ongoing care.
The CDC received information on 33 confirmed cases of AFM across 16 states in 2017, 149 cases in 39 states.
The government says no, the condition that's been striking people by the hundreds around the United States and inflicting them with polio-like symptoms, to include paralysis, is not, in fact, polio.
Health officials don't have an exact cause of AFM. Since the CDC started keeping track in August 2014, there have been 386 cases of AFM - mostly in children.
Oil Prices Rising Ahead Of Iran Sanctions
It could enter into the oil world if the Saudi's are forced to retaliate by pulling crude from the market. The Organization of the Petroleum Exporting Countries (Opec) has said the current market seems fine.
Officials said they will be conducting additional analysis on this year's cases.
"It's definitely not been transmissable from person to person from what the investigation so far has seen".
We don't know. Add to that backlash in recent years against vaccinations of USA citizens - the Hollywood types who've come out strong against vaccines, the whispers of government coverups of vaccine side-effects, the reports of Big Pharma's too-tight ties with Big Government - and what results is an open door for disease. No pathogen has been consistently detected in the patients' spinal fluid.
The CDC says disease prevention steps should be followed, including staying up to date on vaccines, washing hands and using mosquito repellant.
"At this moment, we don't know if it's a virus that is coming and producing direct damage of the gray matter in the spinal cord", he said, "or if a virus is triggering immunological responses that produce a secondary damage in the spinal cord".
Benjamin Greenberg, a neurologist who has treated children with AFM at the University of Texas Southwestern in Dallas, said AFM is "exquisitely rare".
"We want to see that education", he said, "in order to have early recognition and detection".
Cases of AFM were first reported in 2014, and since then, incidences of the condition have been higher in alternate years, STAT notes.
CNN reached out to health departments in every state; 48 states responded, plus the District of Columbia.
Washington Post writers Dana Hedgpeth and Justin Wm.