
(This April 6 story has been corrected to update the CDC data on fatalities to more than 70,000 in 2021 from all synthetic opioids, not more than 100,000 in fiscal 2022 from fentanyl, in paragraph 6)
BEIJING (Reuters) - There is no such thing as illegal trafficking of fentanyl between China and Mexico, China's foreign ministry said on Thursday, responding to a letter from the Mexican president asking Beijing to help limit illicit flows of the deadly drug.