The number of Zika virus cases has crossed 100 in Rajasthan, a state in northern India where palaces and forts draw large numbers of tourists each year.
The Press Trust of India news agency reports eight new cases were reported from the state capital of Jaipur on Saturday.
The agency says that the new cases come amid a state health department investigation to track the outbreak of Zika in pregnant women in their first trimester.
Zika symptoms include fever, rashes and joint pain, and the disease has been linked to birth deformities in some cases.
WHO says Zika has been reported in 86 countries.