Catalase Positive Microorganisms

[Betro Sadek]

The classical USMLE question describing a case of Chronic Granulomatous Disease and then asking you what other infection is the patient liable to get.

Of course you should be thinking of all of the catalase positive microorganisms.

Here's a mnemonic

SPACE

• Staphylococci (important not confuse it with streptococci)
• Pseudomonas aeroginosa
• Aspergillus fumigatus
• Candida
• Enterobacteriaceae (specially Klebsiella and Serratia both of which can cause pneumonia and UTI)

Worth to remember that none of the anaerobes are Catalase positive

Also some others are Catalase positive

• Nisseria (Gonorrhea & Meningitidis)
• Vibrio
• Nocardia
• Campylobacter & Helicobacter
• Gardnerella vaginalis
• Pseudomonas cepacia
• Mycobacterium Tebeculosis also produce a heat sensitive catalase ( active only in body temperature ) so it become catalase negative at 68.0 "F

[ahmednabil616]

Catalase positive organisms
SPACE:
Staphylococcus aureus
Pseudomonas
Aspergillus
Candida
Enterobacter

[menatallah Elgohary]

Catalase +ve organisms- SPACE
Staph aureus
Pseudomonas
Aspergillus
Candida Enterobacter

[tyagee]

catalase positive
SPACE
Staph aureus
Pseudomonas
Aspergillus
Citrobacter
Enterobacter

CGD is SPACE +ve :-)