#idboardreview 40 pig farmer recently got abrasions to his arms and face during a hike, also had duck bite to his finger, presents w/ fever & diffuse annular body rash. Diagnosis? #medEd#idmedEd#idtwitter
Gram-positive facultative anaerobe rod #Erysipelothrix rhusiopathiae. Mainly an occupationally acquired zoonosis transmitted by feces, water, soil, or food scraps contaminated by a wide variety of mammals, birds, and fish
#erysipelothrix is acquired through puncture wounds & scratches of the skin. Occupational zoonosis of butchers, veterinarians, and fishermen. Most important reservoir is healthy domestic swine, up to half of which harbor it their tonsils
#erysipelothrix contact with other animals has led various eponyms including “whale finger,” “seal finger,” and “fish handlers’ disease”. In addition, infection can be acquired through cuts or abrasions on the skin in contact with soil and plant matter
#erysipelothrix rhusiopathiae 3 forms of human disease: Erysipeloid (a localized cutaneous form), diffuse cutaneous, and systemic disease.
#erysipelothrix Localized most common presents as inflammatory plaque with well-defined, raised borders usually on the fingers or back of the hand.
Diffuse systemic:widespread violaceous lesions that may be rhomboid-shaped.
Disseminated form bacteremia w/ IE
#erysipelothrix R. f. cirrhosis and immunosuppression. Penicillin is drug of choice. Ampicillin and ceftriaxone are alternatives
2 major #Schistosoma species in Africa S. mansoni (GI) & S. haematobium (GU). Both species are endemic to Madagascar, where S. mansoni in eastern, central, southern regions & S. haematobium predominant in northwest & west coast. Both species coexist in certain irrigated regions
#idboardreview 40 F returned from Europe 2 wks ago, has been tired, now w/ F & rash on face quickly spread to trunk & legs involves palms & soles. Pharyngeal erythema, leukopenia, thrombocytopenia, mild transaminitis. Diagnosis? #medEd#idmedEd#IDtwitter
#measles negative-stranded RNA virus that belongs to the genus ‘Morbillivirus’, hence the term morbilliform rash
From Jan-Se2019 >1,200 cases of #measles greatest # of cases in 🇺🇸 since 1992. occurs primarily among unvaccinated children/young adults. Spread via droplet nuclei when an infected person coughs or sneezes. most contagious vaccine-preventable dz w/ 2ndry attack rate 90%
#idboardreview 2 kidney transplant recipients post day 20 present w/ altered mental status, neutrophilic pleocytosis, MRI ring enhancing lesion. No improvement on abx & antivirals. Same donor died w/ dx of ADEM/exposure to wading pool. Diagnosis? #medEd#idmesEd#idtwitter
#Balamuthia amebas can infect skin, brain & other organs of the body. Can begin with skin wound on face, trunk, or limbs & progress to granulomatous amebic encephalitis (GAE).
Diagnosis of Balamuthia GAE can be difficult because symptoms are not specific to GAE
#acanthamoeba rapidly progressive meningoencephalitis & uncontrollable cerebral edema, resulting in death from increased intracranial pressure w/in few days after presentation & no response to broad-spectrum abx, antiviral, antifungal, and immune-modulation therapies
#idboardreview 70 F presents w/ fever, myalgia, dyspnea: CXR RLL pneumonia/effusion, resp fail leading to death. Her dog recently died who was seen with rabbit caracass. Diagnosis? #medEd#idmedEd#idtwitter