Japan has recorded a record 135 cases of a potentially deadly tick-borne illness in 2025, according to data released Tuesday by the Japan Institute for Health Security.

As warm weather draws people outdoors in the D.C., Maryland, and Virginia (DMV) region, health experts are warning of a growing threat lurking in the leaf litter: ticks, and with them, a dangerous disease on the rise.

Mongolia has reported at least 44 cases of human tick-borne diseases since the start of the year, according to the National Center for Communicable Diseases (NCCD), which provided an update on Friday.