Acute Q fever: first case report in Taiwan.

A 70-year-old retired fisherman presented with fever, chills and headache for four days. The clinical presentation was mild, including a self-limiting fever, pneumonia and elevated liver enzyme levels. Acute Q fever was proved by a four-fold rise of phase II IgG antibodies. Interestingly, the man denied any animal contact or travelling over the past year. This case may suggest that Q fever should be added to the list of differential diagnoses for acute febrile disease in Taiwan.