CDC - Severe Hand, Foot, and Mouth Disease Associated with Coxsackievirus A6 — Alabama, Connecticut,

Hand, foot, and mouth disease (HFMD) is a common viral illness caused by enteroviruses that predominantly affects children aged <5 years. In the United States, outbreaks of HFMD typically occur during summer and autumn months. The most common cause of HFMD in the United States has been enterovirus serotype coxsackievirus A16. Most infections are asymptomatic; persons with signs and symptoms typically have a mild febrile illness with rash on the palms of the hands and soles of the feet, and sores in the mouth. HFMD also has been associated, often weeks after initial symptom onset, with nail dystrophies (e.g., Beau's lines or nail shedding).

From November 7, 2011, to February 29, 2012, CDC received reports of 63 persons with signs and symptoms of HFMD or with fever and atypical rash in Alabama (38 cases), California (seven), Connecticut (one), and Nevada (17). HFMD is not a reportable disease in the United States; the cases were identified as unusual by health-care providers or by a department of health that contacted CDC for diagnostic assistance. Clinical specimens were collected from patients in 34 of the 63 cases. Coxsackievirus A6 (CVA6) was detected in 25 (74%) of those 34 patients by reverse transcriptase–polymerase chain reaction and partial sequencing of the VP1 gene at CDC or at the California Department of Public Health. No enteroviruses were detected in the other nine patients.

Of the 63 patients, 40 (63%) were aged <2 years, and 15 (24%) were adults aged ≥18 years; 44 (70%) of the patients had exposure to a child care facility or school, and eight (53%) of the 15 adults had contact with children in child care where cases of HFMD were reported, or provided medical care or were related to a child with HFMD

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http://www.cdc.gov/mmwr/preview/mmwrhtml/mm6112a5.htm?s_cid=mm6112a5_w