Until recently, Hemophilus influenzae was considered reliably sensitive to ampicillin, but
during 1973 and 1974 penicillinase-producing strains, resistant to ampicillin, were isolated …

Strains of Hemophilus influenzae type b highly resistant in vitro to ampicillin have been
reported from several widely separated locations in the United States since December …

Ampicillin resistance in Haemophilus influenzae In 1972, an ampicillin resistant type B
Haemophilus influenzae was isolated from the CSF of a child with meningitis who …

Hrom February 1974 through May 1975, 58 isolates of ampicillin-resistant Hemophilus
influenzae from patients were submitted to the Center for Disease Control from 23 states and …

Ampicillin-resistantHaemophilus influenzaetype B was isolated from four children: two with
meningitis, one with septicemia, and one with otitis media. The minimum inhibitory …

Materials and Methods In each of six national regions (Northeast, Great Lakes, Southeast,
Central, Western, and Pacific), the largest pediatric hospitals with university affiliation and …

Abstract Fourteen out of 150 (9.3%) consecutive strains of Haemophilus influenzae isolated
on culture of sputum in the Bacteriology Department, Belfast City Hospital, during 1982/83 …

Sixty-seven clinical isolates of Haemophilus influenzae from various sections of the United
States, England, and Germany were tested for susceptibility to penicillin, ampicillin …

Recently, two infants with severe infections due to ampicillin-resistant strains ofHaemophilus
influenzaetype B were treated at Children's Hospital National Medical Center. In both cases …

(Schulkind, AJtemeier & Ayoub, 1971; Shackelford, Bobinski, Feigin & Cherry, 1972; Barrett,
Taber, Morris, Stephenson, Clark & Yow, 1972) although the first two groups of authors …