A point-of-care laboratory (POC) was set at North Hospital, Marseille, France for the diagnosis in less than two hours of traveller's fever caused by known pathogens, close to the reception of Emergency service. In this instance 30% of patients have no etiological diagnosis after the POC traveller's fever tests .

The objective of this study is to implement a new diagnosis strategy relying on the hypothesis that a rectal swab would improve the etiological diagnosis of traveller's fever of at least 10%.

Inclusion Criteria:

• Patient admitted for traveller's fever requiring a microbiological examination with a "Traveller's fever POC kit"
• Patient who freely signed the informed consent form
• Patient affiliated to a social security regime

Exclusion criteria

• Pregnant or breastfeeding women
• Adult patient under guardianship
• Patient deprived with liberty under court order
• Patient refusing or unable to sign the informed consent form