77; NEORICKETTSIOSIS HELMINTHOECA was heading 1971-81; RICKETTSIALPOX was heading 1963-81
MDA
19760427
MMR
20170224
MN
C01.252.400.780
notation
D012288
OL
use RICKETTSIACEAE INFECTIONS/veterinary to search NEORICKETTSIOSIS HELMINTHOECA 1971-81; use RICKETTSIACEAE INFECTIONS to search RICKETTSIALPOX 1966-81