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 is a particularly deadly bacteria, especially among drug abusers and addicts. In heroin addicts, the bacteria may cause endocarditis, which is inflammation of the heart wall linings, with symptoms including abnormal urine color, chills, excessive sweating, fatigue, fever, and joint pain.erratia Marcescens is also commonly found in respiratory tract infection. Here it can occur after some form of instrumentation associated with a hospital or doctor visit like ventilation or bronchoscopy. It is most common in patients with COPD â chronic obstructive pulmonary disease.