Encephalitis and brain abscess

Question 1

Encephalitis

Answer 1

most often caused by viruses:
1. HSV-1
2. VZV
3. Enteroviruses
4. Powassan virus
5. Eastern equine encephalitis virus
6. West Nile virus
7. Rabies virus
8. EBV
9. CMV
10. Adenoviruses

Mycoplasma pneumoniae
Acanthamoeba spp.
Taenia solium
Toxoplasma gondii
Plasmodium falciparum

Question 2

brain abscesses

Answer 2

Anaerobes:
Prevotella melaninogenica
Bacteriodes spp
Fuspbacterium nucleatum
Cutibacterium acnes

Aerobic:
S. aureus
S. pneumoniae-common with otitis media
Enterobacterales
Nocardia
Viridians Strep - polymicrobial infection

this may occur due to bacteremia, infective endocarditis, or extension from the infection in a nearby sinus (middle ear,sinus)