"Captain Trips" was such a dated name for the flu in the book. Totally 1970s.
King should have changed this name by the 1990 reissue of the book. NOBODY after 1975 would make up a name like that. Back then everything was 'Captain' like 'Captain Fantastic', 'Captain Beyond' 'The Captain and Tennile' and 'Trips' is an obvious Hippie drug reference.
If they still call it 'Captain Trips' in the 2020 remake the show will lose a lot of credibility.