Table 1.
Overview of most important β-lactamases and relative microorganisms at their first appearance (adapted from reference 10 with permission).
| Original (Current) Name | Microorganism | Year (Country) of First Isolation |
|---|---|---|
| TEM-1 | Escherichia coli | 1963 (Greece) |
| SHV-1 | Klebsiella pneumoniae | 1972 (Unknown) |
| Transferable ESBL (SHV-2) | Klebsiella pneumoniae | 1983 (Germany) |
| Serine (class A, group 2f) | Serratia marcescens | 1982 (England) |
| Carbapenemase (SME-1) | Serratia marcescens | 1985 (United States) |
| FEC-1 (CTX-M-1) | Escherichia coli | 1986 (Japan) |
| Plasmid-encoded AmpC (MIR-1) | Klebsiella pneumoniae | 1988 (United States) |
| Plasmid-encoded MBL (IMP-1) | Serratia marcescens | 1988 (Japan) |
| Inhibitor-resistant TEM (TEM-30) | Escherichia coli | 1991 (France) |
| KPC-type (KPC-2) | Klebsiella pneumoniae | 1996 (United States) |
| NDM-1 | Klebsiella pneumoniae | 2006 (India) |