Table 9.

Sensitivity of biosolids-derived isolates to various antibiotics.

Isolate code	Cedecea davisae U243	Enterobacter cancerogenus S201	Hafnia alvei M203	Klebsiella oxytoca U257	Klebsiella terrigena U235	Pantoea dispersa U256	Providencia alcalifaciens U245	Serratia odorifera M104
Antibiotics
Ampicillin 10 μg	–	–	–	–	+	–	+	–
Cephalothin 30 μg	–	+	+	–	+	–	+	+
Chloramphenicol 30 μg	+	+	+	±	+	±	+	+
Ciprofloxacin 5 μg	+	+	+	±	+	+	+	+
Clindamycin 2 μg	–	–	–	–	+	–	–	–
Doxycycline 30 μg	±	+	+	–	+	+	+	+
Erythromycin 15 μg	+	+	–	–	–	–	±	±
Gentamicin 10 μg	–	–	±	–	+	–	+	±
Kanamycin 30 μg	–	+	+	–	–	+	+	+
Methicillin 5 μg	–	–	–	–	+	–	+	–
Nalidixic acid 30 μg	±	+	+	–	–	–	+	+
Nitrofurantoin 300 μg	–	+	+	–	+	–	+	+
Penicillin G 10 μg	–	–	–	–	+	–	+	–
Rifampicin 5 μg	–	–	+	–	+	–	+	–
Streptomycin 10 μg	±	–	+	–	+	–	+	+
Sulphafurazole 300 μg	±	–	–	–	–	–	±	+
Tetracycline 30 μg	–	±	±	–	+	+	+	+
Trimethoprim 5 μg	–	–	+	±	–	–	+	–
Trimethoprim 1.25 μg/Sulfamethoxazole 25.75 μg	+	+	+	–	–	–	+	–

+: sensitive

–: resistant

±: Intermediate