A novel coronavirus, probably of bat origin, has caused an outbreak of severe respiratory infection in humans in Wuhan, China and has been dispersed globally by travelers. The WHO has declared the spread of the infection a Public Health Emergency of International Concern.

Spotted fever group rickettsiosis acquired in sub-Saharan Africa was the most common rickettsial disease observed.

Emerging Infectious Diseases • www.cdc.gov/eid • Vol. 15, No.

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Prevention of malaria in long-term travelers is a complex issue and requires expert advice from travel medicine specialists. Recommendations for prevention of malaria in long-term travelers must be individualized.

The findings assist in differentiating dengue and chikungunya from other acute febrile illnesses and from each other. The findings also illustrate potential outbreaks in nonendemic countries, important toward developing control and prevention strategies.

Prevention of malaria in travelers requires detailed knowledge of malaria epidemiology and host-vector-parasite interactions. Decisions are complicated by a lack of standardized recommendations, controversies, and misconceptions. Improved international consensus is indicated to minimize conflicting guidelines, clarify controversies, and promote adherence to preventive measures.

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