-transparent.png){kind=logo}
Auxotyping and serogrouping by coagglutination were used to characterize penicillinase-producing Neisseria gonorrhoeae and penicillinase-negative isolates from the state of Washington, Shreveport (Louisiana), and the Far East. Fifty-four of 75 penicillinase-producing isolates (72 per cent) from Washington required proline for growth and were serogroup W-l (Pro-1), the predominant type of penicillinase-producing strains in the Philippines; none of 86 penicillinase-negative isolates from Washington was Pro-1 (P less than 0.0001). All 38 penicillinase-producing isolates from Shreveport required proline and were serogroup W-11 (Pro-11); five of 26 penicillinase-negative isolates (19 per cent) from Shreveport were also Pro-11 (P less than 0.0001) but had antigenic specificities within serogroup W-ll that distinguished them from the penicillinase-producing isolates. We conclude that the Washington and Shreveport outbreaks resulted from the spread of imported strains rather than transmission of penicillinase-encoding plasmids to indigenous gonococci. The Shreveport outbreak involved a single strain of penicillinase-producing N, gonorrhoeae and probably originated from a common source, whereas several types were involved in the multiple-source Washington outbreak, indicating repeated introduction of new strains.
H H Handsfield, and
E G Sandström, and
J S Knapp, and
P L Perine, and
W L Whittington, and
D E Sayers, and
K K Holmes
January 1979,
Sexually transmitted diseases,
H H Handsfield, and
E G Sandström, and
J S Knapp, and
P L Perine, and
W L Whittington, and
D E Sayers, and
K K Holmes
May 1994,
The Medical journal of Australia,
H H Handsfield, and
E G Sandström, and
J S Knapp, and
P L Perine, and
W L Whittington, and
D E Sayers, and
K K Holmes
June 1981,
The British journal of venereal diseases,
H H Handsfield, and
E G Sandström, and
J S Knapp, and
P L Perine, and
W L Whittington, and
D E Sayers, and
K K Holmes
February 1983,
The British journal of venereal diseases,
H H Handsfield, and
E G Sandström, and
J S Knapp, and
P L Perine, and
W L Whittington, and
D E Sayers, and
K K Holmes
August 1982,
British medical journal (Clinical research ed.),
H H Handsfield, and
E G Sandström, and
J S Knapp, and
P L Perine, and
W L Whittington, and
D E Sayers, and
K K Holmes
October 1977,
Der Hautarzt; Zeitschrift fur Dermatologie, Venerologie, und verwandte Gebiete,
H H Handsfield, and
E G Sandström, and
J S Knapp, and
P L Perine, and
W L Whittington, and
D E Sayers, and
K K Holmes
January 1987,
Indian journal of dermatology, venereology and leprology,
H H Handsfield, and
E G Sandström, and
J S Knapp, and
P L Perine, and
W L Whittington, and
D E Sayers, and
K K Holmes
February 1988,
The Western journal of medicine,
H H Handsfield, and
E G Sandström, and
J S Knapp, and
P L Perine, and
W L Whittington, and
D E Sayers, and
K K Holmes
October 1976,
Lancet (London, England),
H H Handsfield, and
E G Sandström, and
J S Knapp, and
P L Perine, and
W L Whittington, and
D E Sayers, and
K K Holmes
March 1988,
Kansenshogaku zasshi. The Journal of the Japanese Association for Infectious Diseases,
