Table 2.

Clinical differences between dengue, chikungunya, and Zika virus infection [4, 62, 82•, 90••]

	Chikungunya	Dengue	Zika
Incubation period (days)	1–12	3–14	1–12
Estimated proportion of infections that are asymptomatic (%)	25	75	50–80
Clinical
Fever	+++	+++	+
Headache	+	+++	+
Retro-orbital pain	+	+++	+
Rash	+	+++	+++
Conjunctivitis	+	++	+++
Arthralgia/arthritis	+++	+	+
Myalgia	++	+++	++
Petechiae	+	+++	+

+++ Indicates most likely/most frequent association