Neurosyphilis is considered infectious but is not transmitted from person to person. Generally, a disease like this is caused by an infectious agent and not spread between people. Neurosyphilis, although infectious, is not a genetic disease.
Motown is a record company founded by Berry Gordy, Jr. and incorporated as Motown Record Corporation in Detroit, Michigan, USA, on April 14, 1960. The name, a portmanteau of motor and town, is also a nickname for Detroit.
While, for Beatles records, 1968 was more or less the end of Mono, in a lot of other places, Mono still thrived, at least until the mid-70's. For R&B/Soul/Funk singles, for instance (like what was coming out of Motown and Stax, at the time) the mono mix was often superior, with more energy, more punch, more ooomph.