RT Journal
A1 Hess AF
T1 NEed of further research on the transmissibility of measles and varicella
JF Journal of the American Medical Association
JO Journal of the American Medical Association
YR 1919
FD October 18
VO 73
IS 16
SP 1232
OP 1232
DO 10.1001/jama.1919.02610420060028
UL http://dx.doi.org/10.1001/jama.1919.02610420060028
AB To the Editor: 
    —I have just read the abstract in The Journal (Oct. 4, 1919, p. 1086) of Sellards' article on "The Insusceptibility of Man to Inoculation with Blood from Measles Patients" (Bull. Johns Hopkins Hosp. 30:257 [Sept.] 1919).It is remarkable that Sellards was unable to produce this highly infectious disease by means of the blood or the nasal secretion of infected individuals. Not long ago, however, I had a similar experience with varicella (Am. J. Dis. Child. 16:34 [July] 1918). Thus we are confronted with two diseases—the two most infectious of the endemic diseases in this part of the world—which we are unable to transmit artificially from man to man. The result was most surprising in regard to chickenpox, andif the same rule holds good for measles it would seem as if a basic principle must be involved. Evidently in our experiments we do not, as