A Tale of Two Novel Proteus Species- Proteus Hauseri and Proteus Penneri

We are reporting two different cases of two new Proteus speciesProteus hauseri and Proteus penneri isolated from two different patients. One case reports a one month old male child with history of diarrhoea since six days. His stool sample was sent for microbiological examination and the second case is of Ante natal care patient with urinary tract infection whose urine was send for microbiological examination. Both of these isolates showed Non lactose fermenting colonies. There was no swarming on Blood agar. Biochemical reactions revealed first isolate to be Proteus hauseri and second one as Proteus penneri. Both the patients were treated successfully with meropenem and were discharged few days later. As per our knowledge, this is the third case of Proteus hauseri and few cases of Proteus penneri have been reported so far. So, hereby we are presenting with two cases of novel species of Proteus. Both of these species are very rare and as there was no swarming on blood agar these isolates may be misdiagnosed.