1 Haemophilia A is a recessive X-linked genetic disorder involving a lack of functional clotting Factor VIII and represents 80% of haemophilia cases. 2  Haemophilia B is a recessive X-linked genetic disorder involving a lack of functional clotting Factor IX.
There are other biochemical tests that help to identify Serratia marcescens in the lab. It is negative for the methyl red test due to their production of 2, 3 - butanediol and ethanol, but positive for the Voges-Proskauer test, which shows an organismâs ability to convert pyruvate to acetoin [4].ydrolysis of casein is not a common trait and is therefore useful in the differentiation of Serratia marcescens from the 438 strains of Enterobacteriaceae and Pseudomonadaceae families [12]. Serratia marcescens has the reproducible capability to break down casein producing a clearing on milk agar plates.
Serratia Marcescens symptoms are commonly associated with urinary tract infections, but in 30% to 50% of reported cases, there are no symptoms to assist diagnosis.remature children and infants with an existing diagnosis of sepsis, or after experiencing some kind of head surgery or neurosurgery may develop meningitis caused by Serratia Marcescens with symptoms including headache, fever, vomiting, stupor and may result in coma.