PPT-CASE 3: RICKETTSIA RICKETTSII

DISEASE ROCKY MOUNTAIN SPOTTED FEVER A RED RASH Robert is a 41yearold man who came down with a high fever headache abdominal pain and muscle aches He decides to tough it out at home but after 2 days he also develops a red rash on his arms and legs His wife drives him to the hospital where he is assessed by the emergency physician The doctor asks about any insect bites and Robert tells him about getting tick bites during a camping trip one week prior to developing the first symptoms Upon examining Robert he notes the macular rash on the arms and legs Initial bloodwork shows that Robert has a low platelet count low sodium levels and abnormal liver function tests. “... groups of actually or potentially interbreeding natural populations which are reproductively isolated from other such groups.”. . - Mayr, 1942. Beefalo. Zebroid. (Zorse). Ligers and Tigons, oh my!. Daghistani. Rickettsia. Family. small (0.3 × 1 to 2 μm) . stained poorly with the Gram stain . grew only in the cytoplasm . of. e. ukaryotic . cells . Includes the genera:. Rickettsia. , . Orientia. The Fungi. The . Fungi. A. Once thought to be plants but the cell wall is made of chitin rather than cellulose and these are not photosynthetic. B. Instead they are saprobic organisms that frequently live off of dead organic matter. DR. . SUDHA KUMARI. Assistant Proffecer. Department . of Veterinary Microbiology. Bihar Veterinary College. Unit –II. VMC-602. 06/11/2020. Rickettsia. The . term "rickettsia" has nothing to do with rickets (which is a deficiency disease resulting from lack of vitamin D); the bacterial genus Rickettsia was named after Howard Taylor Ricketts, in honor of his pioneering work on tick-borne spotted fever. . The . rickettsia. are bacteria which are . obligate intracellular parasites.. They are considered a separate group of bacteria because they have the common feature of being spread by arthropod vectors (lice, fleas, mites and ticks). The cells are extremely small (0.25 u in diameter) rod-shaped, coccoid and often pleomorphic microorganisms which have typical bacterial cell walls, no flagella, are gram-negative and multiply via binary fission only inside host cells. They occur singly, in pairs, or in strands. . cultures drawn from your patient, Mrs. I. M. Septic, are growing . gram-positive . cocci. . Mrs. Septic is a 42-year-old woman who was. admitted with a fever and malaise. Which of the following is NOT . Assistant Professor & Head. Department of Veterinary Pathology. Bihar Veterinary College. Bihar Animal Sciences University, Patn. a. Rickettsia. A.  . genus.  of . nonmotile. , . Gram-negative, . . CHLAMYDIA. Abed . ElKader. . Elottol. . MSc. . Microbiology. 2010. 1. Abed . ElKader. . ElOttol. General Characteristics. • Obligate intracellular . bacteria.. • Have . ribosomes. like . bacteria.. formerly the Center for Biosecurity of UPMC (Epidemic Typhus) Image of lice. Source: CDC Public Image Library (ID #9219). Fact Sheet: Rickettsia prowazekii (Epidemic Typhus) As no rapid test is availa Use for Spotted Fever Rickettsiosis (SFR) including Rocky Mountain spotted fever (RMSF), Anaplasma phagocytophilum infection, Ehrlichia chaffeensis infection, Ehrlichia ewingii infection, and U Bartonellosis, Q Fever Decha Pangjai D.V.M. National Institute of Health, Department of Medical Sciences, Thailand What is a Rickettsial Disease? Genus Bartonella Bartonella spp are small, gram - Rolain J, Mathai E, Lepidi H, Somashekar HR, Mathew LG, Prakash J, et al. "Candidatus Rickettsia kellyi," India. Emerg Infect Dis. 2006;12(3):483-485. https://doi.org/10.3201/eid1203.050853. DCH, MD.. How serious the situation is !. CLASSIFICATION OF RICKETTSIAL DISEASE. DISEASES. RICKETTSIAL AGENTS. INSECT VECTORS. MAMMALIAN VECTORS. Typhus group. Epidemic typhus. Murine. typhus. Scrub typhus. Azad AF, Beard CB. Rickettsial Pathogens and Their Arthropod Vectors. Emerg Infect Dis. 1998;4(2):179-186. https://doi.org/10.3201/eid0402.980205.