Infectious disease / Vaccination Flashcards
6 month vaccination
Infanrix hexa (DTP, Hep B, HiB, polio)
+ pneumococcal if at risk
What STI screening to perform in asymptomatic heterosexual persons?
(5)
- First pass urine NAAT gonococcal
- First pass urine NAAT Chlamydia
- Syphilis Serology
(4. HIV serology if exposed, requested or at high risk like travel)
(5. Hep B , if not vaccinated or unsure)
What STDs to test for in a Women with vaginal discharge and no vulvar symptoms?
- HIGH vaginal swab for
a. gonorrhoea
b. chlamydia
c. trichomonas - High Vaginal swab for bacterial MCS
- other regular screening: syphilis +/- HIV +/- Hep B
- Add mycoplasma genitalium IF cervicitis or PID
What are the 4 year old vaccinations as recommended by the NIS?
Just 1 jab of Infanrix IPV (DTP + polio)
(+ pneumovax 23 if at risk)
14 year old recommended vaccine?
Nimenrix (Meningococcal ACWY)
How to approach vaccine hesitant individuals and parents?
- prepare to spend time with the parent and child
- Explore and address concerns
- Do not dismiss concerns
- Discuss the risks of vaccines and the disease it’s supposed to prevent
- Have resources to support your argument
- Avoid overwhelming with too many stats
- Offer further opportunities to come back
How to approach parents who REFUSE to have their child vaccinated? how does this differ from those who are only hesitant.
- Keep the discussion brief, but let them know they can return (vs. taking time to explore concerns)
- Acknowledge concerns (don’t indulge)
- Do not be forceful around their firmly held beliefs (vs. discussion benefits and risks of vaccines and the disease)
- Do not confront with scientific facts and figures (versus having resources and easy stats ready)
- Provide resources (same)
- Offer opportunities to discuss vaccination when they are ready (opposed to pre-arranging a further consult)
What are the aspects of adequate cold chain storage of vaccinations?
- Need a purpose build refrigerator
- Monitor the min and max temperature twice a day every day that the fridge is used
- Take appropriate action if the temperature is not stable or within the required range
- Safe range is between +2 and +8 degrees Celcius.
What are the serious adverse reactions to some or all childhood immunisations?
- Anaphylaxis
- Infection- encephalitis, osteomyelitis
For vaccination generally, which of the following are contraindications for all, or some (listed) vaccines?
- Anaphylaxis to the same vaccine previously
- Current treatment with immunosuppressants for live vaccines
- Current febrile illness with fever > 38.5dC
- High dose steroids
- A live vaccine within the last month
What immunisations are recommended in older adults?
- yearly influenza vaccination
- Recommended 2nd booster for COVID-19 in age > 50. i.e. 4 doses
- Pneumococcal 23. prevenar 23
- Shingles Vaccination
Zostervax (live vaccine) funded in ages 71-79.
Shingrix if zostervax is contraindicated
A. What is the screening recommendation for STIs? For low risk heterosexual individuals
B. Those heteros under 20 and living in remote areas are at medium risk, what should you add to screening?
C. How often?
(non aboriginal or torre straight islanders)
A. Screening for chlamydia in all sexually active individuals up to 29 years old is recommended. Via a urine NAAT
B. In those < 20 or living remote/rural, or even most hetersexual couples you can add on
- gonorrhoea urine NAAT
- syphilis serology
C. No set testing interval. do so opportunistically
For Aboriginal and Torre Strait Islander persons, what STD screening is recommended?
How often is this adviced?
urine NAAAT Chlamydia
urine NAAT Gonorrhoea
Serology HIV
Serology Syphilis
If not vaccinated or immune then Serology
-Hepatitis B, and
-Hepatitis A
Annual testing
A. For high risk individuals such as sex workers or injecting drug users, what STD screening is recommended.
B. how often?
(Keep in mind that M2M is not included in this group)
A
-urine NAAT chlamydia
-urine NAAT gonorrhoea
-serology syphilis
-serology HIV
if not vaccinated or immune then
-Hep B serology
-Hep A serolgy
If injecting drugs then
-Hep C serology
B. Repeat testing yearly
Men who have sex with men are in the highest risk group.
Within this group itself what is considered even higher risk behaviours?
(3)
Unprotected anal sex
>10 partners in the last year
participate in group sex or use recreational drugs during sex
A. What is the recommended STD testing for M2M individuals?
B. How often
Urine NAAT for chlamydia
Urine NAAT for gonorrhoea
Serology Syphilis
Serology HIV
throat and rectal swab for chlamydia
throat and rectal swab for gonorrhoea
If not vaccinated or immune then
-Hepatitis B serology
-Hepatitis A serology
B. repeat 12 monthly
C. If in the higher risk of these men, then repeat 3-6 monthly.
What should prompt you to test for HIV?
any AIDs condition
TB
STIs (or part of screening)
Hep B and Hep C
Malignant Lymphoma
Head and neck cancer
Recurrent shingles or multidermatomal
Severe or recalcitrant psoriasis or seborrheic dermatitis
Unexplained thromboctopenia
Anal and cervical intraepithelial neoplasia grade 2 or above
Extensive warts or molluscum contangiousum
Oral hairy leukoplakia
Florid and difficult to treat fungal infections
Unexplained retinopathy
Regular STD screening in low risk hetero groups, includes:
Chlamydia urine NAAT
Gonorrhoea urine NAAT
Syphilis serology.
In the following situations what extra tests to you add?
A. Men with urethral symptoms
B. Women with Pelvic pain
C. Women with discharge but no pelvic symptoms
A. Urine NAAT mycoplasma genitalium
- treat for mycoplasma with doxy
-or if discharge treat for gonorrhea
B. Cervical SWAB for chlamydia, gonorrhoea, mycoplasma, trichomonas AND a swab for bacterial MCS
- treat as PID
C. High vaginal swab for chlaymydia, gonorrhoea, trichomonas, and if cervicitis present then mycoplasma
-treat for PID or just chlamydia or gonorrhoea first
How do you treat asymptomatic chlamydia STDs?
How far back do you contact trace?
and
When do you perform a test for cure?
A. Doxycycline 100mg, orally, 12 hourly, 7 days
OR
Azithromycin 1gram orally, single dose
B. 6 months of contact tracing
C. Test for cure not always needed, but can be done 3 weeks after STARTING treatment in those who are
- pregnant
-with anorectal infection or
-PID
Treatment of Gonorrhoea ?
genital vs. pharyngeal
When do you do a test for cure?
A. Genital
Ceftriaxone 500mg in 2ml of 1% lidocaine given Intramuscularly stat, (can give 500mg IV).
PLUS
azithromycin 1gram orally, stat as a single dose
Pharyngeal, same, but azithromycin is 2grams stat
B. 2 weeks after starting treatment using a URINE NAAT or 1 week after using a culture
What is PID?
What is the most cause of it?
Pelvic Inflammatory disease is infection of the upper female genital tract which could be any of
fallopian tubes
ovaries
adjacent pelvic structures
uterus
Can cause endometritis, salpingitis, tuboovarian abscess, peritonitis.
Usually caused by Chlamydia
if not then Gonorrhoea or Mycoplasma
What is severe PID?
What treatment is needed?
A. If there is PID with
FEVER > 38
Severe pelvic pain
Tachycardia or other signs of sepsis
other systemic features: vomiting
B. Needs hospital treatment
What is empiric treatment for NON SEVERE PID?
Ceftriaxone 500mg in 2ml 1% Lidocaine given Intramuscularly
PLUS
Azithromycin 1gram, orally, stat with a dose one week later
(or Doxy 100mg, 12 hourly, orally, 14 days)
PLUS
Metronidazole 400mg, oral, 12 hourly for 14 days
Who is at risk of a hepatitis C infection?
(9)
Injecting drug use, past or current
Being in prison
sexual partner of someone with HCV
HIV or Hep B co infection
Child of mother with HCV
Evidence of liver disease, say increased ALT
Birth in a high prevalent region: Egypt, Pakistan, mediterranean, Eastern Europe, Africa, Asia
Blood transfusion before 1990
Tattoos or body piercings
What blood tests do you order for a suspected hepatitis C infection?
HCV antibody - will indicate an infection but unsure if it is acute, or cleared
Then HCV RNA - will tell you if there is acute infection
And HCV genotyping - helps plan drug regimes
What ways can you assess cirrhosis in someone with hepatitis C
A. gold standard would be biopsy
B. Transient Elastography (Fibroscan)
C. APRI = AST:Platelet ratio
What advice do you give someone who is Hep C positive, and not yet treated, or about to start treatment?
Do not share needles
Do not get pregnant until treated
Inform workplace
Advise healthcare workers you interact with
Inform sexual partners
Do not donate bloods
Do not share personal grooming equipment like razor blades
Do not get tattoos or piercings
Continue normal safe sex practices
Is there monitoring needed during / after Hepatitis C treatment, and if so what?
- No monitoring is needed during treatment
- Need to test for HCV RNA after treatment as a “test for cure”
this is done 12 weeks after treatment FINISHES.
usually treatment is 8-12 weeks then 12 weeks after that so about 6 months later order the HCV RNA
How prevalent is hepatitis B and C in australia?
Hep B - 1% prevalence, 4% in ATSI
Hep C, usually just over 100,000 live with chronic hepatitis C.
How does hepatitis B spread?
Vertical from mother to child (this accounts for the majority of transmission in high risk groups coming to australia. 95% of children with Hep B will go on to develop Chronic Hep B)
Cracked bleeding skin to skin
Injection drug use
Needle use like in tattoos
Unprotected any sex
Blood transfusion
What are complications of hepatitis B?
HCC
Cirrhosis
Liver failure