text_1: Nonhuman primates are incapable of producing neutralizing antibodies in reponse to the Eilat virus (EILV) produced in mosquitos.
text_2: A single dose of EILV/CHIKV produced in mosquito cells elicited rapid (within 4 d) and long-lasting (>290 d) neutralizing antibodies that provided complete protection in two different mouse models. In nonhuman primates, EILV/CHIKV elicited rapid and robust immunity that protected against viremia and telemetrically monitored fever.