77; NEORICKETTSIOSIS HELMINTHOECA was heading 1971-81; RICKETTSIALPOX was heading 1963-81
MDA
19760427
MMR
20190617
MN
C01.920.914
C01.150.252.400.789
notation
D012288
OL
use RICKETTSIACEAE INFECTIONS/veterinary to search NEORICKETTSIOSIS HELMINTHOECA 1971-81; use RICKETTSIACEAE INFECTIONS to search RICKETTSIALPOX 1966-81