Health authorities in the Indian state of Kerala have declared a state of alert in all districts after identifying 15 cases of Zika virus.
Kerala Health Minister Veena George confirmed the infections in Trivandrum (now Thiruvananthapuram) district.
India reported a Zika outbreak in the western state of Gujarat in 2016-17.
The mosquito-borne virus has been linked to shrunken brains in children and a rare auto-immune disease called Guillain-Barre syndrome.
