PREVENTION OF OPPORTUNISTIC INFECTIONS

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PREVENTION

OF

OPPORTUNISTIC

INFECTIONS

17 Sept 2006

J Caperna, MD

UCSD Owen Clinic

Importance of Prevention

XDR-TB

16 Aug 2006 Int’l AIDS Conf,

Toronto, Canada

“High prevalence and mortality from extensively-drug resistant (XDR) TB in

TB/HIVcoinfected patients in rural South

Africa”

Author(s):N.R. Gandhi et al.

Ghandi et al 2006

 53 patients reported,

 identified retrospectively by resistance to all available drugs:(isoniazid,rifampin, ethambutol, streptomycin, ciprofloxacin, kanamycin)

 half died within 25 days and 52 of 53 died within 136 days,

Ghandi et al 2006

47 able to be HIV tested and all HIV positive.

 DNA fingerprinting (Spoligotyping) showed

90% of cases were from same source patient.

 6 of 53 were health care workers

(NOSOCOMIAL)

Tuberculosis

The most common opportunistic infection in AIDS patients worldwide.

A common cause of death in AIDS patients worldwide.

After aggressive prevention efforts including treatment of latent asymptomatic tuberculosis infection, the incidence of

TB in the United States fell dramatically through the 1980’s, until incidence increased related to AIDS.

Today, over half of TB cases in the US are in immigrants.

Intensive Prevention Efforts are still needed in the US in immigrants and AIDS patients, which account for the majority of cases.

Prevention is effective only with adequate resources.

Importance of Preventing TB

Estimate in general that 1 active TB patient will infect 10 others.

TB outbreaks can be huge, in the 100’s or more.

 Recent South African example showed that

47 patients were potentially infected by the same person.

 Treatment is long, 6-12 months.

 Rare cases now of XDR-TB that are untreatable.

Goals of lecture:

At the end of the session, the participant will be able to:

1) Define Opportunistic Infection (OI);

2) State the associated disease states in which OI’s occur;

Goals of lecture:

At the end of the session, the participant will be able to:

3) Know the most frequently occurring OI’s, their environmental distribution, routes of exposure & how to prevent them.

Goals of lecture:

At the end of the session, the participant will be able to:

4) Discuss tuberculosis exposure;

5) Understand the public health principles used to recommend prophylaxis;

.

6) Identify indications for primary or secondary prophylaxis.

Prevention of OI’s

OUTLINE

1)

Definition of OI

2) Prevention of Exposure to OI

3) Primary & Secondary Prophylaxis of

OI’s

4) CDC guidelines

Define:

OPPORTUNISTIC INFECTION

 An infection by a microorganism that normally does not cause disease but becomes pathogenic when the body’s immune system is impaired.

Wikepedia

“… infections caused by organisms that usually do not cause disease in a person with a healthy immune system, but can affect people with a poorly functioning or suppressed immune system. They need an ‘opportunity’ to infect a person .”

Case Definition

 Definition based on a list of cases.

Each disease or a cluster of some of them defines the condition.

For AIDS, the CDC has a “case” definition, with a list of over 12 infections considered to be opportunistic if associated with HIV infection.

The 1993 AIDS Surveillance Case

Definition of the U.S. Centers for

Disease Control and Prevention

A diagnosis of AIDS is made whenever a person is HIV-positive and:

1) he or she has a CD4+ cell count below

200 cells per microliter OR

2) his or her CD4+ cells account for fewer than 14 percent of all lymphocytes OR

3) that person has been diagnosed with one or more of the AIDS-defining illnesses listed below.

AIDS-Defining Illnesses

Candidiasis of bronchi, trachea, or lungs (see Fungal Infections)

Candidiasis , esophageal (see Fungal Infections)

Cervical cancer, invasive -HPV

Coccidioidomycosis, disseminated (see Fungal Infections)

Cryptococcosis, extrapulmonary (see Fungal Infections)

Cryptosporidiosis, chronic intestinal (>1 month duration) (see Enteric Diseases)

Cytomegalovirus disease (other than liver, spleen, or lymph nodes)

Cytomegalovirus retinitis (with loss of vision)

Encephalopathy, HIVrelated † (see Dementia)

Herpes simplex : chronic ulcer(s) (>1 month duration) or bronchitis, pneumonitis, or esophagitis

Histoplasmosis , disseminated (see Fungal Infections)

Isosporiasis , chronic intestinal (>1 month duration) (see Enteric Diseases)

Kaposi's sarcoma, HHV8

Lymphoma, Burkitt's, EBV

Lymphoma, immunoblastic

Lymphoma, primary, of brain (primary central nervous system lymphoma)

Mycobacterium avium complex or disease caused by M. Kansasii , disseminated

Disease caused by Mycobacterium tuberculosis , any site (pulmonary ‡ or extrapulmonary † ) (see

Tuberculosis)

Disease caused by Mycobacterium, other species or unidentified species, disseminated

Pneumocystis carinii pneumonia (aka jiroveci)

Pneumonia, recurrent ‡ (see Bacterial Infections)

Progressive multifocal leukoencephalopathy

Salmonella septicemia, recurrent (see Bacterial Infections)

Toxoplasmosis of brain (encephalitis)

Wasting syndrome caused by HIV infection †

OI’s by Kingdom

Bacteria (MONERA)

Salmonella

Mycobacteria

TB, MAC, Kansasii, other

Pneumococcus

Fungi (FUNGI)

Candida

Crytpococcus

Coccidiomycosis

Histoplasmosis

Pneumocystis

 Protozoa/parasites (PROTISTA)

Toxoplasmosis

Cryptosporidium

Isospera

OI’s by Kingdom

Viruses (perhaps not living, and not in any kingdom)

CMV

HSV

Infections more frequent and more severe in HIV, but not in case definition of AIDS:

 Hep B

 Hep C

 HHV8

 HPV

 EBV

 Syphilis

Additional Illnesses That Are AIDS-Defining in

Children, But Not Adults

 Multiple, recurrent bacterial infections

 Lymphoid interstitial pneumonia/pulmonary lymphoid hyperplasia

Conditions of Suppressed Immunity other than AIDS:

1) Malnutrition

2) Immunosuppressive agents used for organ transplant

3) Prednisone

4) Chemotherapy for cancer

5) Genetic predisposition

6) Antibiotic treatment

7) Skin damage

8) Medical procedure

Primary Immunodeficiency Diseases

1.

Genetic conditions associated with immune disorders.

2.

Congenital versus acquired.

Deficiencies: a. Cellular b. Humeral c. Phagocytic d. Complement e. Combined f. Other

Primary Immunodeficiency Diseases

1)Severe Combined Immunodeficiency, or SCID

2) X-Linked Agammaglobulinemia (XLA)

3) Common Variable Immunodeficiency

4) Selective IgA Deficiency

5) IgG Subclass Deficiency

6) Hyper IgM Syndrome

7) DiGeorge Syndrome

8) Hereditary Ataxia-Telangectasia

9) Wiskott-Aldrich Syndrome

10) Phagocytic Deficiencies

11) Chronic Granulomatous Disease (CGD)

12) Chediak-Higashi Syndrome

13) Complement Deficiencies

14) Hyper IgE Syndrome (Job Syndrome)

Prevention of OI’s

OUTLINE

1) Definition of OI

2)

Prevention of Exposure to OI

3) Primary & Secondary Prophylaxis of

OI’s

4) CDC guidelines

Types of Exposure

Airborne

Waterborne

Foodborne

Sexual

Bloodborne

Environmental/Occupational

Pet-related

Travel-related

2001 USPHS/IDSA Guidelines for the Prevention of

Opportunistic Infections in

Persons Infected With Human

Immunodeficiency Virus

2002 MMWR June 14, /51(RR08);

47-52. Appendix:

“Recommendations To Help Patients

Avoid Exposure to or Infection from

Opportunistic Pathogens”

Prevention of Exposureno recommendations

Currently, there are no recommendations for preventing exposure to:

P jiroveci pneumonia (PCP) – no data to support isolation

M avium complex (MAC) – no data

S pneumoniae and H influenzae – not practical

Candidiasis – not practical

Cryptococcosis – not practical

Pathogens for which recommendations exist for prevention of exposure

 EXAMPLES

 Airborne: Tuberculosis, Histoplasmosis,

Coccidiomycosis

 Waterborne: Cryptosporidium, isospera

 Foodborne: Toxoplasmosis, enteric bacteria

 Blood/Sexual: Hepatitis C, Hep B, Syphilis, HPV,

Cytomegalovirus (CMV),

Herpes Simples Virus (HSV)

 Pets: toxoplasmosis (in cats)

Toxoplasmosis

 Test for Toxoplasma IgG antibody soon after diagnosis of HIV infection to detect latent infection

 Counsel all HIV-positive persons, particularly if IgG Ab negative, to avoid the various sources of toxoplasmic infection, including food, pet, soil exposures

Cryptosporidiosis

Educate and counsel HIV-infected persons about transmission of Cryptosporidium :

Contact with infected adults and children

Contact with infected animals

Drinking or contact with contaminated water (eg, water from lakes, rivers)

Drinking contaminated public water supplies

Eating contaminated food

Wash hands after gardening or soil contact, risk of cryptosporidium, toxoplasmosis.

Bacterial Enteric Infections

Food

Do not eat raw or undercooked eggs, raw or undercooked poultry, meat, seafood,sushi and other high-risk foods

180 F for poultry, 165 F for red meat.

Avoid soft cheeses, meat pates and cold deli items

Avoid salad bars

Avoid cross-contamination of foods and wash hands after preparation

Bacterial Enteric Infections

Pets

Avoid:

• new pets <6 months old, especially those that have diarrhea

• contact with animals that have diarrhea

• contact with pets' feces

• contact with reptiles, chicks, and ducklings because of the risk for salmonellosis

Bird feces has cryptococcus, histoplasmosis, mai

Cats feces carries toxoplasmosis, Cat scratch can transmit Bartonella

Wash hands after handling pets

Bacterial Enteric Infections

Travel

The risk for food/water-borne infections is higher during travel to developing countries

Avoid high-risk foods and beverages: raw foods, tap water, items sold by street vendors

Generally safe: steaming-hot foods and beverages, fruits that are peeled by the traveler, and bottled beverages

Boil water; use iodine or chlorine when boiling is not practical

Histoplasmosis

 Exposure in histoplasmosis-endemic areas cannot be avoided completely

Patients with CD4 counts <200 cells/µL should avoid risky activities (eg, contact with dusty surface soil, chicken coops)

Cytomegalovirus Disease

Persons in risk groups with low rates of CMV seropositivity should be tested for antibody

Counsel on consistent condom use

Counsel on risk of transmission from children

CMV-seronegative persons requiring blood transfusion should be given only CMV antibody-negative or leukocyte-reduced cellular blood products in nonemergency situations

Herpes Simplex Virus

 Consistent use of condoms to reduce risk of sexual exposure

Varicella-Zoster Virus

 If susceptible to VZV, avoid exposure to persons with zoster

 Immunize household contacts of HIVpositive persons

Human Herpesvirus 8

Infection

(Kaposi Sarcoma-Associated Herpes Virus)

 Counsel about deep kissing and sexual intercourse with high-risk persons

 Consistent use of condoms during sex

 Do not share IV drug equipment

Human Papillomavirus Infection

 Consistent use of condoms during sex.

Recentlh, some evidence that this reduces risk for HPV.

Prevention of OI’s

OUTLINE

1) Definition of OI

2) Prevention of Exposure to OI

3)

Prevention Despite or After

Exposure:

Primary & Secondary Prophylaxis of

OI’s

4) CDC guidelines

1)

2)

3)

4)

5)

6)

Principles to guide prophylaxis recommendations:

Environmental distribution,

Settings where exposure cannot be prevented,

Existence of effective prophylaxis,

Toxicity of prophylaxis,

Feasibility of prophylaxis (injections, meds by mouth, duration)

Cost of prophylaxis.

Two types of prophylaxis:

 PRIMARY

 SECONDARY

Two types of prophylaxis:

 PRIMARY---to prevent even first occurrence of infection.

 SECONDARY — to prevent a second occurrence of an infection that has already occurred at least once.

Prevention of OI’s

OUTLINE

1) Definition of OI

2) Prevention of Exposure to OI

3) Primary & Secondary Prophylaxis of

OI’s

4)

CDC guidelines

2004 CDC guidelines

 Treating Opportunistic Infections Among

HIV-infected Adults and Adolescents.

 MMWR 53 (RR15), pp 1-112.

Summary of OIs for Which

Prevention Is Recommended

Primary Prophylaxis

Pneumocystis jiroveci pneumonia (PCP)*

Tuberculosis*

Toxoplasmosis*

Mycobacterium avium complex (MAC)*

Varicella-zoster*

S pneumoniae infections

Hepatitis A and B

Influenza

* Standard of care

† Generally recommended

Summary of OIs for Which

Prevention Is Recommended

Secondary Prophylaxis

Pneumocystis jiroveci pneumonia (PCP)*

Toxoplasmosis*

Mycobacterium avium complex (MAC)*

Cryptococcosis*

Histoplasmosis*

Coccidioidomycosis*

Cytomegalovirus*

Salmonella bacteremia

* Standard of care

† Generally recommended

PRIMARY Prophylaxis for

Opportunistic Infections

WHEN TO START?

 CD4<200 PCP

 CD4<100 Toxoplasmosis

 CD4<50 MAC

What are the diseases we are trying to prevent?

 Pictures of pathogens and pathology.

Three of the most common OI’s in AIDS.

Pneumocystis 1000X, each sperhical cyst 4-7microns

The cysts of Pneumocystis carinii in lung have the appearance of crushed ping-pong balls.

Toxoplasmosis

Toxoplasmosis—DISEASE

MAC

MAC—MILD LUNG DISEASE

MAC—DISEASE

MAC—DISEASE

OIs for Which Prevention Is

Not Routinely Indicated

Primary Prophylaxis

 Bacteria (neutropenia)

Cryptococcosis

Histoplasmosis

 Cytomegalovirus

Secondary

Prophylaxis

 Herpes simplex virus

§

 Candida

§

† Evidence for efficacy but not routinely indicated

§ Recommended only if subsequent episodes are frequent or severe

Primary & Secondary Prophylaxis for

Opportunistic Infections

 When to start?

 When to stop?

 When to restart?

Indications for Possible Discontinuation of

Primary and Secondary Prophylaxis

Agent Recommendation

(only for patients on effective ART)

PCP

Toxo

MAC

Primary: CD4 >200 cells/µL for 3 months

Secondary: CD4 >200 cells/µL for 3 months

Primary: CD4 >200 cells/µL for 3 months

Secondary: CD4 >200 cells/µL for 6 months + initial toxo treatment + asymptomatic

Primary: CD4 >100 cells/µL for 3 months

Secondary: CD4 >100 cells/µL for 6 months + 12 months

MAC treatment + asymptomatic

Specific OI’s and specific recommendations

 OIs for which primary and secondary prophylaxis are recommended

 OIs for which only primary prevention generally is recommended

 OIs for which only secondary prevention generally is recommended

 Infections requiring other management strategies

OI Guideline Slides:

December 2001

 These slides were created by John G. Bartlett,

MD and Richard W. Dunning, MHS based on the December 2001 Guidelines. They have been substantially revised and updated by

Susa Coffey, MD and Kirsten Balano, PharmD based on more recent guidelines and CDC publications.

Created 2001, reviewed 6/05

Disclaimer

These slides were developed using the most recent treatment guideline information at the time of production.

However, in the rapidly changing field of HIV care, this information could become out of date quickly. Users are encouraged to compare the production date of this slide set with the publication date of the most recent guidelines.

Also, it is intended that these slides be used as prepared, without changes in either content or attribution. Users are asked to honor this intent.

AETC National Resource Center

Created 2001, reviewed 6/05

OIs for Which Primary and

Secondary Prophylaxis Are

Recommended

Created 2001, reviewed 6/05

P jiroveci Pneumonia

 Primary Prophylaxis

Indication:

 CD4 <200 cells/µL or thrush

When to consider discontinuation:

 CD4 >200 cells/µL on ART >3 months

When to restart:

 CD4 falls to <200 cells/µL

Created 2001, reviewed 6/05

P jiroveci Pneumonia

 Secondary Prophylaxis

Indication:

 Completion of PCP acute therapy

When to consider discontinuation:

 CD4 >200 cells/µL for >3 months on effective

ART

When to restart:

 CD4 falls to <200 cells/µL

Created 2001, reviewed 6/05

P jiroveci

Pneumonia

Preferred Regimens:

 TMP-SMX DS 1 tablet PO QD*

 TMP-SMX SS 1 tablet PO QD

Alternative Regimens:

 TMP-SMX DS 1 tablet PO 3 times per week

 Dapsone 100 mg PO QD

 Dapsone 50 mg QD + pyrimethamine 50 mg per week + leucovorin

25 mg per week*

 Dapsone 200 mg per week + pyrimethamine 75 mg per week + leucovorin 25 mg per week*

 Atovaquone 1,500 mg PO QD*

 Aerosolized pentamidine 300 mg per month

* Adequate for toxoplasmosis (CD4 <100 cells/µL + positive serology)

Created 2001, reviewed 6/05

Toxoplasmosis:

Primary Prophylaxis

Indication:

 Positive toxoplasma lgG + CD4 <100 cells/µL

When to consider discontinuation:

 CD4 >200 cells/µL for 3 months on effective ART

When to restart:

 CD4 falls to <100200 cells/µL

Created 2001, reviewed 6/05

Toxoplasmosis:

Primary Prophylaxis

Preferred Regimen:

 TMP-SMX DS 1 tablet PO QD

Alternative Regimens:

 TMP-SMX SS 1 tablet PO QD

 Dapsone 50 mg PO QD + pyrimethamine 50 mg PO per week + leucovorin 25mg PO per week

 Dapsone 200 mg per week + pyrimethamine 75 mg per week + leucovorin 25mg per week

 Atovaquone 1,500 mg PO QD +/- pyrimethamine 25 mg PO QD + leucovorin 10 mg PO QD

Created 2001, reviewed 6/05

Toxoplasmosis:

Secondary Prophylaxis

Indication:

 Should be initiated upon completion of acute therapy for toxoplasmosis, unless immune reconstitution occurs with effective ART

When to consider discontinuation:

 CD4 >200 cells/µL for 6 months on effective ART + completed acute therapy + asymptomatic

When to restart:

 CD4 falls to <200 cells/µL

Created 2001, reviewed 6/05

Toxoplasmosis:

Secondary Prophylaxis

Preferred Regimen:

 Sulfadiazine 500-1,000 mg QID + pyrimethamine

25-50 mg PO QD + leucovorin 10-25 mg PO QD

Alternative Regimens:

 Clindamycin 300-450 mg PO Q 6-8 hours + pyrimethamine 25-50 mg QD + leucovorin 10-25 mg QD

 Atovaquone 750 mg PO Q 6-12 hours +/- pyrimethamine

25 mg QD + leucovorin 10 mg QD

Created 2001, reviewed 6/05

M avium

Complex:

Primary Prophylaxis

Indication:

 CD4 <50 cells/µL

When to consider discontinuation:

 CD4 >100 cells/µL for >=3 months on effective

ART

When to restart:

 CD4 falls to <50100 cells/µL

Created 2001, reviewed 6/05

M avium

Complex:

Primary Prophylaxis

Preferred Regimen:

 Azithromycin 1,200 mg PO per week or

 Clarithromycin 500 mg PO BID

Alternative Regimens:

 Rifabutin* 300 mg PO QD or

 Azithromycin 1,200 mg PO per week + rifabutin*

300 mg PO QD

* Adjust dosage for concurrent PI or NNRTI

Created 2001, reviewed 6/05

M avium

Complex:

Secondary Prophylaxis

Indication:

 Upon completion of MAC treatment

When to consider discontinuation:

 CD4 >100 cells/µL for >=6 months on effective ART

+ 12 months treatment + asymptomatic

When to restart:

 CD4 falls to <100 cells/µL

Created 2001, reviewed 6/05

M avium

Complex:

Secondary Prophylaxis

Preferred Regimen:

 Clarithromycin 500 mg PO BID + ethambutol

15 mg/kg PO QD +/- rifabutin* † 300 mg PO QD

Alternative Regimen:

 Azithromycin 500 mg PO QD + ethambutol

15 mg/kg PO QD +/- rifabutin* 300 mg PO QD

* Adjust dosage for concurrent PI or NNRTI

† Rifabutin reduces levels of clarithromycin by 50%

Created 2001, reviewed 6/05

OIs for Which Only Primary

Prevention Generally Is

Recommended

Created 2001, reviewed 6/05

Tuberculosis:

Latent Infection

Screening:

 (5-TU) purified protein derivative (PPD) by the

Mantoux method

 When HIV infection is first recognized

 Annual test if PPD negative on initial evaluation and continued risk

 Routine evaluation for anergy is not recommended

Created 2001, reviewed 6/05

Tuberculosis:

Treatment of Latent Infection

Indications:

 PPD >=5 mm induration at 48-72 hours

 History of positive PPD with no treatment

 TB contact (discontinue if PPD negative at 12 weeks

 All PPD positive patients should be evaluated for active TB, including chest X ray

Created 2001, reviewed 6/05

Tuberculosis:

Treatment of Latent Infection

Recommended Regimen:

 INH 300 mg PO QD + pyridoxine 50 mg PO QD for 9 months (270 doses)

 INH 900 mg PO QD + pyridoxine 100 mg PO twice weekly for 9 months (76 doses )

† Directly observed therapy recommended

Created 2001, reviewed 6/05

Tuberculosis:

Treatment of Latent Infection

Alternative Regimen:

 Rifampin 600 mg PO QD for 4 months

Note: Rifampin should not be used with protease inhibitors or nevirapine. Rifabutin can be substituted for rifampin for patients taking PI/NNRTIs with appropriate dosage adjustment.

Created 2001, reviewed 6/05

Tuberculosis:

Treatment of Latent Infection

 Rifampin-pyrazinamide (RZ) for 2 months should NOT be given:

 High rate of severe liver toxicity*

*

MMWR 2003; 52, 31;735-9

Created 2001, reviewed 6/05

Tuberculosis:

Treatment of Latent Infection

When to Restart:

 Patients previously treated for TB infection or

TB disease do not require retreatment based upon diminished immune function alone.

 Patients with known exposure to TB or suspicion of active TB infection may need treatment.

 In these instances, consultation with experts is strongly recommended.

Created 2001, reviewed 6/05

Varicella-Zoster Virus

 Varicella vaccine is contraindicated in HIVinfected adults

 Following exposure to varicella, give varicellazoster immune globulin (VZIG) to susceptible

HIV-infected children and adults. Give ASAP but

<=96 hours after close contact with a person who has chickenpox or shingles

 No preventive measures are currently available for shingles

Created 2001, reviewed 6/05

Vaccines: Routine Use

Agent Indication

Hepatitis B HBsAb negative, HBsAg negative

Hepatitis A Risk* + HAV Ab (IgG) negative

S pneumoniae CD4 >200 cells/µL

(consider at any CD4 count)

Influenza Annually, October-December

*Risk = IDU, MSM, hemophilia, chronic HBV or HCV

Created 2001, reviewed 6/05

Vaccines: Other

Give If Indicated:

 Cholera

 Japanese encephalitis

 Lyme disease

 Tetanus-diphtheria

 Typhoid inactivated (Typhim V

1

)

Created 2001, reviewed 6/05

Vaccines: Other

Contraindicated (Live Virus):

 Varicella

 Yellow fever

 Typhoid live (Ty21a)

 Measles

 Vaccinia

Created 2001, reviewed 6/05

OIs for Which Only Secondary

Prevention Generally Is

Recommended

Created 2001, reviewed 6/05

Cytomegalovirus Retinitis:

Chronic Maintenance Therapy

(Following Induction)

Consult with a specialist

Preferred Regimen:*

 Valganciclovir 900 mg PO QD

 Foscarnet 90-120 mg/kg IV QD

 Ganciclovir implant + PO valganciclovir

Alternative Regimens:*

 Cidofovir IV + probenecid PO

 Fomivirsen intravitreous injection

*CDC/NIH/IDSA OI Treatment Guidelines, 12/04 Created 2001, reviewed 6/05

Cytomegalovirus Retinitis:

Chronic Maintenance Therapy

(Following Induction)

When to Consider Discontinuation:

 Completed initial therapy + no active disease + negative ophthalmologic exam + CD4 >100-150 cells/µL for 6 months on effective ART

When to Restart:

 CD4 <100150 cells/µL

Created 2001, reviewed 6/05

Prophylaxis Summary: Fungal Agents

Infection

Candida

Histoplasma

Cryptococcus

Coccidiodes

Prophylaxis

Primary Secondary

No

No*

Consider if severe or frequent

Yes

Discontinue

Secondary

Restart

Secondary

?

No -

-

No Yes Yes** CD4 <100

No Yes No -

* Consider if CD4 <100 cells/µL + endemic area (>10 cases/100 pts-yrs)

** CD4 >100200 cells/µL for 6 months on ART + complete initial therapy

+ asymptomatic

Created 2001, reviewed 6/05

Remember:

 Each fungal infection requires a specific prophylaxis.

Cryptococcosis:

Chronic Maintenance Therapy

Indication:

 Upon completion of acute therapy

When to Consider Discontinuation:

 Completed initial treatment + asymptomatic + CD4

>100200 cells/µL for 6 months on effective ARV therapy

When to Restart:

 CD4 falls to <100200 cells/µL

Created 2001, reviewed 6/05

Cryptococcosis:

Chronic Maintenance Therapy

Preferred Regimen:

 Fluconazole 200 mg PO QD

Alternative Regimen:

 Itraconazole 200 mg PO QD

Created 2001, reviewed 6/05

Histoplasmosis:

Lifelong Suppressive Therapy

Indication:

 Completion of acute therapy for histoplasmosis

When to Consider Discontinuation:

 Insufficient data (? CD4 >100 cells/µL on ART)

Created 2001, reviewed 6/05

Histoplasmosis:

Lifelong Suppressive Therapy

Preferred Regimen:

 Itraconazole 200 mg BID

Created 2001, reviewed 6/05

Coccidioidomycosis:

Lifelong Suppressive Therapy

Indication:

 Completion of acute therapy for coccidioidomycosis

When to Stop:

 Insufficient data (? CD4 >100 cells/µL on

ART)

Created 2001, reviewed 6/05

Coccidioidomycosis:

Lifelong Suppressive Therapy

Preferred Regimens:

 Fluconazole 400 PO QD, or

 Itraconazole 200 mg PO BID

Patients with meningeal disease require consultation with an expert.

Created 2001, reviewed 6/05

Salmonella:

Prevention of Recurrence

Indication:

 Salmonella septicemia

Regimen:

 Preferred: fluoroquinolones (ciprofloxacin) for susceptible organisms

Other Management:

 Household contacts should be evaluated for carriage so that hygienic measures and/or antimicrobial therapy can be instituted and recurrent transmission can be prevented

Created 2001, reviewed 6/05

Infections Requiring Other

Management Strategies

Created 2001, reviewed 6/05

Hepatitis C Virus Infection:

Prevention

 Screen all HIV-infected patients

 If positive: check HCV RNA to confirm chronic infection, then:

 Avoid excessive amounts of alcohol

 Vaccinate against hepatitis A and hepatitis B

 Evaluate for chronic liver disease and for need for treatment

 Monitor liver enzymes in patients on ART

 ART should not be withheld routinely from patients coinfected with HIV and HCV

Created 2001, reviewed 6/05

Human Papillomavirus Infection:

Prevention

Genital Epithelial Cancers in HIV-Infected Women

 Pelvic exam + Pap smear twice in first year after

HIV diagnosis

 If normal, repeat Pap smear annually

 If abnormal, follow consensus guidelines* for management

Prevention of Recurrence

 Careful follow-up and monitoring after treatment

 No specific therapy recommended

*Wright TC Jr, JAMA 2002

Created 2001, reviewed 6/05

HPV-Associated Anal Cancer

 HIV and HPV coinfected women and men, especially men who have sex with men, are at increased risk for HSIL and anal cancer

 To date, no formal guidelines recommend anal

Pap smear screening, but some specialists recommend this for all HIV-infected adults*

*CDC/NIH/IDSA OI Treatment Guidelines, 12/04

Created 2001, reviewed 6/05

For Additional Information:

Sources of Complete Guidelines, Slide

Sets and Summaries:

AETC Resource Center: www.aids-etc.org

AIDSInfo: www.aidsinfo.nih.gov

CLINICAL TRAINING

HIV Miniresidency

UCSD Owen Clinic ssbenson@ucsd.edu

619-543-2415

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