Human Infectious Disease Exam 3 Part Two

achapss's version from 2017-04-08 18:20


Question Answer
Order the parts of the blood from most dense to least denseerythrocytes, leukocytes/platelets, plasma
endocarditisheart valve infection
pericarditisinfections in membranes surrounding the heart
sepsisbacteria in the blood
viremiaviruses in the blood
Plaguevector bourne illness via fleas, not common any longer due to less flea animal interaction
Septicemic plagueinfection of the blood
Pneumonic Plagueonly person to person contact version of the plague via respiratory droplets or after septicemic plague spills over to the lungs
Bubonic plagueinfection swelling and death of the lymph nodes causing pulsing flesh areas called bubos that can burst and cause further infection, most survive with treatment or die from sepsis
Mononucleosisepstein barr virus, most of the world has it already and it is asymptomatic, not present in babies or adults but paralyzing fatigue, fever, swollen lymph nodes etc in teenagers due to expanded number of leukocytes
Lyme Diseasebacterial disease via tic bite vector, constantly changing its antigen and recurring infection
Symptoms of lyme diseasecan be onset(bullseye rash, fever, dizziness, headache or late onset(neurological issues as limpness and paralysis) and cardiac problems
treatment of lyme disease2-4 weeks of antibiotics successful if taken early
Hemorrhagic fever diseasesdengue, yellow, ebola, lassa via aedes agypti vector, are all zoonotic spillovers, RNA virus, cause internal and external bleeding due to change in blood coagulation
Ebolahemorrhagic fever disease that first begins as a zoonotic disease contracted by blood and fluid from animal carcasses and then becomes human to human transmissible, NOT vector bourne, reservoir species unknown and thought to maybe be fruit bats
Why is there such an issue with developing a vaccine and treatment for ebola?because we do not know what the reservoir species is there is no way to know when and where it may pop up next
How does the HIV Virus infect its host?it must have both receptors and co receptors to enter the host CD4 and either CCR5 or CXCR4
If both the receptor and co receptor of HIV are present what happens?virus must travel quickly to the lymph as it is not hardy and can not survive independently, once in the lymph it infects macrophages and some T cells and disguises itself to gain access to the nodes, it then infects as many helper T cells as possible and reproduces HIV+ cells then breaking out and continuing
What are the symptoms of HIV?acute viremia and flu like symptoms for the first 2-4 weeks after initial infection with a high viral count in the blood, then the patient becomes asymptomatic as the viral count lowers and enters a latent period of infection that can vary in time by person
Provirusgenetic material of a virus incorporated into the host genome and able to replicate
What kind of virus is HIV and how is it able to infect host human cells?HIV is an ssRNA virus, in order to infect the host cells it must become copied and made into readable DNA using its enzyme reverse transcriptase and utilizes the protein GP120 on the outside of its capsid
Circomacommon AIDS symptom of the skin
What are the two most common AIDS symptoms?circoma and pneumonia
Who is at risk for AIDS?male to female sexual transmission (vaginal secretions have too low of viral load to usually transmit), homosexual transmission, vertical transmission, dirty needle share, hospital infection
How can we utilize immune therapies to treat HIV?the unaffected arms of the immune system can be stimulated and trained to fight infection

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