Chikungunya Cases Identified through Passive Surveillance and Household Investigations — Puerto Rico, May 5–August 12, 2014\
Chikungunya was first detected in Puerto Rico in May 2014. To avoid chikungunya, travelers to and residents of regions of the Americas where mosquitoes that transmit the disease are present should use standard measures to avoid mosquito bites. Chikungunya is a viral disease that causes fever and severe joint pain.
Pertussis Epidemic — California, 2014
Pertussis incidence is likely to continue to increase in the United States due to the natural cycle of disease and the waning of immunity conferred by currently available vaccines. Strategies to prevent the most severe cases of pertussis, which occur primarily in young infants, should be prioritized. California is experiencing a pertussis epidemic.
Respiratory Syncytial Virus — United States, July 2012–June 2014
RSV seasonal patterns in 2012-2013 and 2013-2014 remained consistent with previous years and demonstrated the usual differences in RSV circulation among HHS regions. Respiratory syncytial virus (RSV) is a leading cause of lower respiratory infection in infants and young children worldwide. In the United States, RSV predominantly circulates in the fall, winter and spring.
Notes from the Field:
Transmission of Chikungunya Virus in the Continental United States — Florida, 2014
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