The World Health Organization (WHO) has agreed to let the cruise ship MV Hondius dock off Tenerife, in the Canary Islands, after an apparent outbreak of person-to-person spread hantavirus infections on board.[42821] Luis Rodríguez, the top U.S. official responsible for public health on cruise ships, has retired from his position at the Centers for Disease Control and Prevention (CDC), amid concerns over the recent hantavirus outbreak on a cruise ship.[39545] Experts warn that more passengers could fall ill due to the lack of studies on hantaviruses and the potential for person-to-person transmission on the cruise ship.[36834]