Viro - Bovine & Sm Rumis Review

drraythe's version from 2015-08-30 22:33

Check yo'self before you wreck yo'self

Question Answer
What are some differential diagnoses for BVD?Depending on the presentation, differential diagnoses may include FMD, Malignant Catarrhal Fever, & respiratory tract viral diseases.
Death from myocarditis in calves is from?FMD
Abortion comes from fever, not from virus itselfFMD
7 serotypesFMD (they are: SAT1, SAT2, SAT3, asia1 & O, C, A)
Shedding before clinical signsFMD
Dz that can cause lameness in pigsFMD (if your foot is in your mouth, youre gonna have trouble walking)
Long distance airborne xmissionFMD
Ddx for FMD?Vesicular Stomatitis, enterovirus, & vesicular dz in swine
FMD affects who?RUMNANTS (goats, sheep, cows...) & SWINE (NOT HORSES)
What dz in what situation can lead to SCC?Bovine Papillomatosis, if it is in the presentation of the papillomas forming in the bladder & GI, & can cause "endemic hematuria". In THIS case, the usually benign papillomas can turn to SCC & be malignant
Infected through abrasionsBovine Papillomatosis
Bovine Herpes Virus 2 (BHV2)Bovine Mammillitis
Bovine Mammillitis can also look likeVesicular Stomatitis, FMD, Papillomatosis, Pseudocowpox
Latent, recrudescent, intermittent, or continuous sheddingHERPES (this was specifically said in the Bovine Mammillitis section)
Horseshoe shaped scabsPseudocowpox (a cow is a pseudo-horse(shoe) ). NOTE: these occur mostly on the mammaries (muzzle/nose of nursing calves bc of this)
ZoonoticsCows: FMD(rare but possible), Coronavirus. From small rumis: Orf (Parainfluenza was mentioned to affect humans, & bovine coronavirus diarrhea)
All abortion dzsBVD, IBR(Infectious Bovine Rhinotracheitis), Blue Tongue. (FMD but only bc of the fever, not the virus truly causing it), IPV (Infectious Pustular Vulvovaginitis), Maedi
NakedsBovine Pap, Blue Tongue, FMD, Rotavirus Diarrhea
BVD systemic or a specific system?SYSTEMIC
Name the magic days associated w/ BVD (& what kinda situation/type)Trans-placental movement of NONCYTOPATHIC strain of BVD into fetus--> effect depends on day. <80 days (less than a little over 2mo), resorption. 80-125 days(little over 2mo to about 4mo), IMMUNOTOLERANCE(-->PI aka persistently infected calf). >125days(more than 4mo), birth defects(CNS, cerebellar hypoplasia, retinal defects) & abortions
Mucosal DiseaseBVD
Cerebellar HypoplasiaCalf infected after gestational day 125 w/ the ncpBVD virus
PanleukopeniaBVD (NOT MD) in postnatal non-preggo cattle
Dxing BVD (most common? gold standard?)MOST COMMON: IHC (detects ANTIGEN, bc PI/immunotolerant calves wouldn't mount a defense to be detected!). GOLD STANDARD: virus isolation
Which strain of BVD would make a PI calf: Cytopathic or noncytopathic?Noncytopathic
Mucosal dz vs FMD? (in terms of # infected)MD = only 1 or 2 affected. FMD= MANY affected
ParamyxoviridaeParainfluenza 3, Bovine Respiratory Syncytial Disease (NOT IBR--aka i better resist the Paramyxo-trend)
SyncytiumsMalignant Catarrhal Fever, Parainfluenza 3 infxn, Bovine Respiratory Syncytial Disease, Infectious Bovine Rhinotracheitis (IBR) (so MCF & all 3 resp. dzs) (malignantly crushing cells together)
Which resp dz has the biggest syncytiums?Bovine Respiratory Syncytial Dz (obv, the one w/ syncytial in the name)
Most severe resp dz?IBR (HERPS IS WAY WORSE THAN A COLD)
Bovine herpes virus 1 (BHV-1)IBR, Pustular Vaginitis (NOT MALIG CATARAHAL, THATS AHV-1)
What cellular lesions do PARAMYXOVIRIDAE resp dzs make?INTRACYTOPLASMIC & INTRANUCLEAR. & of course syncytiums, for all resp. for bovine
Are there vx for the cattle resp viruses?Yes, all 3 cattle resp viruses have vx- & for Shipping Fever too (syncytial is only in experimental stages, not sure if it counts)
Hyperemic nasal mucosaeIBR
Diarrhea in calves 1 week of age, vs first few weeks after birth?Coronavirus at about 1 wk of age (& older cows too, which is weird bc the Rota is the 1 that is the first few weeks but only the first few weeks, & Corona is around 1 week but then can also affect adults), Rota if first few weeks after birth
Cattle diarrheal dzs....which have vx?BOTH Corona & Rota do. (Vx dams not calves)
Which Bovine diarrhea-causing virus affects only very young cattle, & which affects old & young?Rota = only young
Corona = old & young
Need trypsin to grow in cultureRotavirus (if you're feeling Rotary ur probably trippin)
Diarrhea, only moderately depressed, continue to eat, & will recover in a few daysRota
Etiological agent is the Herp?Depends. BHV-2 = mammilitis. BHV-1 = IBR & Infectious Pustular Vulvovaginits. Acelaphine Herpesvirus 1 = Malignant Catarrhal Fever
Leukopenia? Lymphocytosis?Leukopenia is both BVD (mentioned in infected non-preggo non-PI adults) & in Malig. Catarrhal Fever. Lymphocytosis is in Bovine Leukemia (I feel like I pee malignantly)
If survive, permanent ocular dzMCF (catarrhal- think cataract)
How do you reactivate latent Herpes infxns?Injxns of corticosteroids
ReoviridaeRotavirus & Blue Tongue
RetroviridaeCOMB - Caprine Arthritis-Encephalitis, Ovine Pulmonary Adenomatosis, Bovine Leukemia, Maedi,
Which dz will leave the sufferer afebrile, alert, w/ good appetite?Caprine Arthritis-Encephalitis
Mastitis & pneumonia?Caprine Arthritis-Encephalitis
White matter lesion vs grey matter lesionWhite = Caprine Arthritis-Encephalitis
Milk as major transmission?Caprine Arthritis-Encephalitis (Retrovirus)
Breeds susceptible to ScrapieSuffolk & Hampshire
Ovine Progressive Pneumonia akaMaedi
Virus doesnt grow on cell cultureOvine Pulmonary Adenomatosis (doesnt grow on culture & also only histopath. lots of restrictions w/ this 1)
Pea sized nodules on lungsOvine Pulmonary Adenomatosis
ArbovirusBlue Tongue (think blue mosquitos flying around)
Segmented genomesRotavirus, Blue Tongue (REOVIRUSES)
SEMEN xmissionBVD, Infectious Pustular Vulvovaginitis /Balanoposthitis, Maedi (FMD was mentioned, not red txt tho) (infected semen is almost as gross as a cow's pusy-pussy squirting diarrhea out of it onto a milk maed(maid) )
NO VXMCF, Caprine Arthritis-Encephalitis, Maedi, Ovine Pulmonary Adenomatosis (most Retros dont have vx...Bovine Leukemia has an experimental 1 but not really mentioned) (Malignant goats made cancer unvaccinateable)
Biting arthropods & surgical equipment are common mechanical vectorsMaedi (arthropods maed to make like difficult)
Which Retrovirus will you not use serology w/?Ovine Pulmonary Adenomatosis (only histopath)
Lots of surfactant?Ovine Pulmonary Adenomatosis (Retrovirus)
Scabby mouth akaOrf
Contagious Ecthyma/contagious Pustular dermatitis akaOrf
Vesicles/ulcersVESICLES: FMD. ULCERS: MCF, IBR, BVD (Herpes & BVD which does like everything)
GOLD STANDARD for dx BVD?Cell culture/isolation
Is dx mammilitis important? Why? How?Important bc looks SIMILAR to Papillomatosis, Cowpox, Pseudocowpox, Vesicular Stomatitis & FMD. So need to dx! Done w/ EM & virus isolation
Is there a vx for Shipping Fever?YES & it is MULTIAGENT (bc many diff dzs can be underlying cause)
Cattle are a dead end hostMCF
Tropics & subtropics worldwideBlue Tongue (sippin blue drinks on the beach)
Which resp dz is shed in nasal/resp secretions, & which is shed in all sorts of secretions?Nasal/resp = OPA. The one shed in many is Maedi
Apply vx to scarified skin before giving birthOrf
Need to do virus isolationMCF
Dead end hosts means transmission isnt usually successfulMCF
Peracute fatal Hemorrhagic Dz in...Blue Tongue in N. America (hemorrhaging out your red white & BLUE blood)
Trade barriersFMD, Blue Tongue
Immunopathology prolongs illnessMaedi (immune system MAED IT WORSE)
Does Blue Tongue have vesicles or ulcers? Neither?Neither!