Solid organ transplant patients

Overview

This section covers assessing the need for and duration of antimicrobial prophylaxis for:

The risk of infection in solid organ transplant recipients depends on:

  • the type of transplant
  • the relatedness of the match
  • the type and dosage of immunosuppressive therapy (induction and maintenance)
  • whether the patient has had episodes of acute or chronic rejection
  • the time since the transplant
  • the age and comorbidities of the recipient.

Antimicrobial prophylaxis after organ transplant is a highly specialised area. The following text is a general guide to the usual indications for antimicrobial prophylaxis. Seek expert advice from the transplant centre or an infectious diseases physician before changing or stopping prophylaxis.

Kidney transplant

Following a kidney transplant, patients are at increased risk of infection. For antimicrobial prophylaxis recommendations, see Antimicrobial prophylaxis for kidney transplant patients. Additional perioperative antibiotic prophylaxis may also be required; this is beyond the scope of these guidelines.

Antimicrobial prophylaxis reduces the risk of infection; however, infection can occur despite prophylaxis. Adherence to antimicrobial prophylaxis increases efficacy. Nonpharmacological preventive measures (including infection control, diet and lifestyle strategies) also reduce the risk of infection—see the guidelines listed in Further reading.

Table 1. Antimicrobial prophylaxis for kidney transplant patients

[NB1]

Pneumocystis jirovecii pneumonia (PJP)

PJP prophylaxis is indicated in all patients.

Start prophylaxis after the transplant when the patient is stable and tolerating oral medications. For antimicrobial regimens, see here.

Duration of PJP prophylaxis:

The optimal duration of PJP prophylaxis is uncertain. Assess the patient’s level of immune compromise and risk of infection before stopping PJP prophylaxis. Review the benefit of ongoing prophylaxis regularly.

Continue PJP prophylaxis for at least 6 to 12 months after transplant or following treatment of rejection episodes, or indefinitely if the patient has significant ongoing immunosuppression. Some centres routinely continue prophylaxis indefinitely—consult local protocols.

Cytomegalovirus (CMV)

Indications for CMV prophylaxis are beyond the scope of these guidelines—refer to local protocols. The choice between universal prophylaxis and pre-emptive treatment depends on several factors, including the availability of CMV monitoring, and the risk of CMV reactivation.

For universal prophylaxis, start on day 10 after transplant. For antiviral regimens, see Universal prophylaxis.

For pre-emptive treatment, start when indicated based on viral load or the rate of change in viral load. For antiviral regimens, see Pre-emptive treatment.

Duration of CMV prophylaxis:

Assess the patient’s level of immune compromise and risk of infection before stopping CMV prophylaxis.

For universal prophylaxis, continue for 3 to 6 months after transplant, or for 1 to 3 months following treatment of rejection episodes (eg with antilymphocyte therapy).

For pre-emptive treatment, continue until one or two CMV DNA nucleic acid amplification (eg polymerase chain reaction [PCR]) test results are negative—consult local protocols.

Herpes simplex virus (HSV)

Some transplant centres give HSV prophylaxis to patients who are HSV IgG positive—consult local protocols. HSV prophylaxis is not required if the patient is receiving valganciclovir or ganciclovir for CMV prophylaxis.

Start prophylaxis after the transplant when the patient is stable and tolerating oral medications. For antiviral regimens, see here.

Duration of HSV prophylaxis:

Continue HSV prophylaxis for 1 month. Restart prophylaxis during treatment of rejection episodes and continue for 1 month.

Suppressive therapy:

If the patient has recurrent oral mucocutaneous or genital HSV infection, suppressive therapy is recommended. See Recurrent oral mucocutaneous herpes and Suppressive therapy for genital herpes.

Strongyloides stercoralis

Perform baseline Strongyloides serology in patients with a past or present epidemiological risk of acquiring S. stercoralis [NB2].

S. stercoralis prophylaxis (or pre-emptive treatment) is recommended for:

  • patients with positive Strongyloides serology
  • patients with negative serology who live in or visit an area in which S. stercoralis infection is endemic.

For antimicrobial regimens and duration of therapy, see here.

Burkholderia pseudomallei

Perform baseline B. pseudomallei serology in patients who live or have lived in an endemic region such as tropical regions of Australia [NB3].

B. pseudomallei prophylaxis is recommended for:

  • patients with positive B. pseudomallei serology
  • patients with a history of melioidosis (B. pseudomallei infection) but no clinical evidence of current disease.

Consider giving primary prophylaxis during the wet season [NB4] to patients with negative B. pseudomallei serology who live in or visit an endemic area.

For antimicrobial regimens and duration of therapy, see here.

Other

Hepatitis B virus and tuberculosis reactivation can occur—some patients require antimicrobial treatment. See Hepatitis B virus prophylaxis and Prevention of tuberculosis.

The risk of Listeria monocytogenes meningitis is increased. Consult local protocols and consider dietary and food safety measures to prevent L. monocytogenes infection [NB5].

Note:

NB1: Antimicrobial prophylaxis after organ transplant is a highly specialised area. This table is a general guide to the usual indications for antimicrobial prophylaxis. Seek expert advice from the transplant centre or an infectious diseases physician before changing or stopping prophylaxis.

NB2: Patients at risk of acquiring S. stercoralis include those who were born, live in or visit endemic areas. This includes patients from tropical or central Australia or remote Aboriginal and Torres Strait Islander communities, as well as older patients from southern European countries, and refugees and migrants from developing countries.

NB3: Tropical regions of Australia refer to regions north of 20°S latitude. This includes areas of Queensland north of Mackay, the Northern Territory north of Tennant Creek, and Western Australia north of Port Hedland.

NB4: In tropical regions of Australia, the wet season is usually from October to April. Melioidosis is more common in this season.

NB5: For dietary and food safety measures to prevent L. monocytogenes infection, see the Food Standards Australia New Zealand website.

Liver transplant

Following a liver transplant, patients are at increased risk of infection. For antimicrobial prophylaxis recommendations, see Antimicrobial prophylaxis for liver transplant patients. Additional perioperative antibiotic prophylaxis may also be required; this is beyond the scope of these guidelines.

Antimicrobial prophylaxis reduces the risk of infection; however, infection can occur despite prophylaxis. Adherence to antimicrobial prophylaxis increases efficacy. Nonpharmacological preventive measures (including infection control, diet and lifestyle strategies) also reduce the risk of infection—see the guidelines listed in Further reading.

Table 2. Antimicrobial prophylaxis for liver transplant patients

[NB1]

Pneumocystis jirovecii pneumonia (PJP)

PJP prophylaxis is indicated in all patients.

Start prophylaxis after the transplant when the patient is stable and tolerating oral medications. For antimicrobial regimens, see here.

Duration of PJP prophylaxis:

The optimal duration of PJP prophylaxis is uncertain. Assess the patient’s level of immune compromise and risk of infection before stopping PJP prophylaxis. Review the benefit of ongoing prophylaxis regularly.

Continue PJP prophylaxis for at least 6 months after transplant or following treatment of rejection episodes, or indefinitely if the patient has significant ongoing immunosuppression.

Cytomegalovirus (CMV)

Indications for CMV prophylaxis are beyond the scope of these guidelines—refer to local protocols. The choice between universal prophylaxis and pre-emptive treatment depends on several factors, including the availability of CMV monitoring, and the risk of CMV reactivation.

For universal prophylaxis, start on day 10 after transplant. For antiviral regimens, see Universal prophylaxis.

For pre-emptive treatment, start when indicated based on viral load or the rate of change in viral load. For antiviral regimens, see Pre-emptive treatment.

Duration of CMV prophylaxis:

Assess the patient’s level of immune compromise and risk of infection before stopping CMV prophylaxis.

For universal prophylaxis, continue for 3 to 6 months after transplant, or for 1 to 3 months following treatment of rejection episodes (eg with antilymphocyte therapy).

For pre-emptive treatment, continue until one or two CMV DNA nucleic acid amplification (eg polymerase chain reaction [PCR]) test results are negative—consult local protocols.

Herpes simplex virus (HSV)

Some transplant centres give HSV prophylaxis to patients who are HSV IgG positive—consult local protocols. HSV prophylaxis is not required if the patient is receiving valganciclovir or ganciclovir for CMV prophylaxis.

Start prophylaxis after the transplant when the patient is stable and tolerating oral medications. For antiviral regimens, see here.

Duration of HSV prophylaxis:

Continue HSV prophylaxis for 1 month. Restart prophylaxis during treatment of rejection episodes and continue for 1 month.

Suppressive therapy:

If the patient has recurrent oral mucocutaneous or genital HSV infection, suppressive therapy is recommended. See Recurrent oral mucocutaneous herpes and  Suppressive therapy for genital herpes.

Yeast and mould infections

Antifungal prophylaxis is indicated for patients at the highest risk for invasive yeast or mould infection—refer to local protocols or seek expert advice. Some centres give yeast prophylaxis because infection with Candida species is more common. However, invasive aspergillosis has higher morbidity and mortality. Examples of patients at the highest risk of fungal infection include patients undergoing a repeat transplant, patients with fulminant liver failure, and patients with kidney failure requiring renal replacement therapy.

Start prophylaxis early in the postoperative period and refer to local protocols for drug choice and duration of therapy.

Strongyloides stercoralis

Perform baseline Strongyloides serology in patients with a past or present epidemiological risk of acquiring S. stercoralis [NB2].

S. stercoralis prophylaxis (or pre-emptive treatment) is recommended for:

  • patients with positive Strongyloides serology
  • patients with negative serology who live in or visit an area in which S. stercoralis infection is endemic.

For antimicrobial regimens and duration of therapy, see here.

Burkholderia pseudomallei

Perform baseline B. pseudomallei serology in patients who live or have lived in an endemic region such as tropical regions of Australia [NB3].

B. pseudomallei prophylaxis is recommended for:

  • patients with positive B. pseudomallei serology
  • patients with a history of melioidosis (B. pseudomallei infection) but no clinical evidence of current disease.

Consider giving primary prophylaxis during the wet season [NB4] to patients with negative B. pseudomallei serology who live in or visit an endemic area.

For antimicrobial regimens and duration of therapy, see here.

Other

Hepatitis B virus and tuberculosis reactivation can occur—some patients require antimicrobial treatment. For details, see Hepatitis B virus prophylaxis and Prevention of tuberculosis.

The risk of Listeria monocytogenes meningitis is increased. Consult local protocols and consider dietary and food safety measures to prevent L. monocytogenes infection [NB5].

Note:

NB1: Antimicrobial prophylaxis after organ transplant is a highly specialised area. This table is a general guide to the usual indications for antimicrobial prophylaxis. Seek expert advice from the transplant centre or an infectious diseases physician before changing or stopping prophylaxis.

NB2: Patients at risk of acquiring S. stercoralis include those who were born, live in or visit endemic areas. This includes patients from tropical or central Australia or remote Aboriginal and Torres Strait Islander communities, as well as older patients from southern European countries, and refugees and migrants from developing countries.

NB3: Tropical regions of Australia refer to regions north of 20°S latitude. This includes areas of Queensland north of Mackay, the Northern Territory north of Tennant Creek, and Western Australia north of Port Hedland.

NB4: In tropical regions of Australia, the wet season is usually from October to April. Melioidosis is more common in this season.

NB5: For dietary and food safety measures to prevent L. monocytogenes infection, see the Food Standards Australia New Zealand website.

Heart transplant

Following a heart transplant, patients are at increased risk of infection. For antimicrobial prophylaxis recommendations, see Antimicrobial prophylaxis for heart transplant patients. Additional surgical antibiotic prophylaxis is also required; see Surgical prophylaxis for cardiac surgery.

For infection prophylaxis in heart–lung transplant patients, see Lung and heart–lung transplant.

Antimicrobial prophylaxis reduces the risk of infection; however, infection can occur despite prophylaxis. Adherence to antimicrobial prophylaxis increases efficacy. Nonpharmacological preventive measures (including infection control, diet and lifestyle strategies) also reduce the risk of infection—see the guidelines listed in Further reading.

Table 3. Antimicrobial prophylaxis for heart transplant patients

[NB1]

Pneumocystis jirovecii pneumonia (PJP)

PJP prophylaxis is indicated in all patients.

Start prophylaxis after the transplant when the patient is stable and tolerating oral medications. For antimicrobial regimens, see here. PJP prophylaxis with trimethoprim+sulfamethoxazole also provides prophylaxis against Toxoplasma gondii.

Duration of PJP prophylaxis:

The optimal duration of PJP prophylaxis is uncertain. Assess the patient’s level of immune compromise and risk of infection before stopping PJP prophylaxis. Review the benefit of ongoing prophylaxis regularly.

Continue PJP prophylaxis for at least 6 to 12 months after transplant or following treatment of rejection episodes, or indefinitely if the patient has significant ongoing immunosuppression. Most centres routinely continue prophylaxis indefinitely—consult local protocols.

Toxoplasma gondii

T. gondii prophylaxis is indicated if the recipient is T. gondii IgG negative but the donor is positive. T. gondii prophylaxis is not required if the patient is receiving trimethoprim+sulfamethoxazole for PJP prophylaxis. If the patient is hypersensitive to trimethoprim+sulfamethoxazole and requires prophylaxis for both PJP and T. gondii, see here for regimens.

Start prophylaxis after the transplant when the patient is stable and tolerating oral medications.

Duration of T. gondii prophylaxis:

Limited data are available to guide duration of T. gondii prophylaxis—seek expert advice. If the patient is taking trimethoprim+sulfamethoxazole for both PJP and T. gondii prophylaxis, use the duration of PJP prophylaxis as a guide.

Cytomegalovirus (CMV)

Indications for CMV prophylaxis are beyond the scope of these guidelines—refer to local protocols. Pre-emptive treatment is not well studied in heart transplant recipients; universal prophylaxis is the preferred approach.

Start universal prophylaxis on day 1 after transplant. For antiviral regimens, see Universal prophylaxis.

Duration of CMV prophylaxis:

Assess the patient’s level of immune compromise and risk of infection before stopping CMV prophylaxis.

Continue CMV universal prophylaxis for at least 6 months after transplant, or for 1 to 3 months following treatment of rejection episodes (eg with antilymphocyte therapy). Some centres continue CMV prophylaxis indefinitely if there is a serological mismatch between the organ donor and recipient.

Herpes simplex virus (HSV)

Some transplant centres give HSV prophylaxis to patients who are HSV IgG positive—consult local protocols. HSV prophylaxis is not required if the patient is receiving valganciclovir or ganciclovir for CMV prophylaxis.

Start HSV prophylaxis after the transplant when the patient is stable and tolerating oral medications. For antiviral regimens, see here.

Duration of HSV prophylaxis:

Continue HSV prophylaxis for 1 to 3 months. Restart prophylaxis during treatment of rejection episodes and continue for 1 to 3 months.

Suppressive therapy:

If the patient has recurrent oral mucocutaneous or genital HSV infection, suppressive therapy is recommended. See Recurrent oral mucocutaneous herpes and Suppressive therapy for genital herpes.

Strongyloides stercoralis

Perform baseline Strongyloides serology in patients with a past or present epidemiological risk of acquiring S. stercoralis [NB2].

S. stercoralis prophylaxis (or pre-emptive treatment) is recommended for:

  • patients with positive Strongyloides serology
  • patients with negative serology who live in or visit an area in which S. stercoralis infection is endemic.

For antimicrobial regimens and duration of therapy, see here.

Burkholderia pseudomallei

Perform baseline B. pseudomallei serology in patients who live or have lived in an endemic region such as tropical regions of Australia [NB3].

B. pseudomallei prophylaxis is recommended for:

  • patients with positive B. pseudomallei serology
  • patients with a history of melioidosis (B. pseudomallei infection) but no clinical evidence of current disease.

Consider giving primary prophylaxis during the wet season [NB4] to patients with negative B. pseudomallei serology who live in or visit an endemic area.

For antimicrobial regimens and duration of therapy, see here.

Other

Hepatitis B virus and tuberculosis reactivation can occur—some patients require antimicrobial treatment. For details, see Hepatitis B virus prophylaxis and Prevention of tuberculosis.

The risk of Listeria monocytogenes meningitis is increased. Consult local protocols and consider dietary and food safety measures to prevent L. monocytogenes infection [NB5].

Note:

NB1: Antimicrobial prophylaxis after organ transplant is a highly specialised area. This table is a general guide to the usual indications for antimicrobial prophylaxis. Seek expert advice from the transplant centre or an infectious diseases physician before changing or stopping prophylaxis.

NB2: Patients at risk of acquiring S. stercoralis include those who were born, live in or visit endemic areas. This includes patients from tropical or central Australia or remote Aboriginal and Torres Strait Islander communities, as well as older patients from southern European countries, and refugees and migrants from developing countries.

NB3: Tropical regions of Australia refer to regions north of 20°S latitude. This includes areas of Queensland north of Mackay, the Northern Territory north of Tennant Creek, and Western Australia north of Port Hedland.

NB4: In tropical regions of Australia, the wet season is usually from October to April. Melioidosis is more common in this season.

NB5: For dietary and food safety measures to prevent L. monocytogenes infection, see the Food Standards Australia New Zealand website.

Lung and heart–lung transplant

Following a lung or heart–lung transplant, patients are at increased risk of infection. For antimicrobial prophylaxis recommendations, see Antimicrobial prophylaxis for lung or heart–lung transplant patients. Additional perioperative antibiotic prophylaxis may be required; this is beyond the scope of these guidelines.

Antimicrobial prophylaxis reduces the risk of infection; however, infection can occur despite prophylaxis. Adherence to antimicrobial prophylaxis increases efficacy. Nonpharmacological preventive measures (including infection control, diet and lifestyle strategies) also reduce the risk of infection—see the guidelines listed in Further reading.

Table 4. Antimicrobial prophylaxis for lung or heart–lung transplant patients

[NB1]

Pneumocystis jirovecii pneumonia (PJP)

PJP prophylaxis is indicated in all patients.

Start prophylaxis after the transplant when the patient is stable and tolerating oral medications. For antimicrobial regimens, see here. PJP prophylaxis with trimethoprim+sulfamethoxazole also provides prophylaxis against Toxoplasma gondii.

Duration of PJP prophylaxis:

The optimal duration of PJP prophylaxis is uncertain. Assess the patient’s level of immune compromise and risk of infection before stopping PJP prophylaxis. Review the benefit of ongoing prophylaxis regularly.

Continue PJP prophylaxis for at least 6 to 12 months after transplant or following treatment of rejection episodes, or indefinitely if the patient has significant ongoing immunosuppression. Most centres routinely continue prophylaxis indefinitely—consult local protocols.

Toxoplasma gondii

T. gondii prophylaxis is indicated for heart–lung transplant recipients who are T. gondii IgG negative, but the donor is positive. T. gondii prophylaxis is not required if the patient is receiving trimethoprim+sulfamethoxazole for PJP prophylaxis. If the patient is hypersensitive to trimethoprim+sulfamethoxazole and requires prophylaxis for both PJP and T. gondii, see here for regimens.

Start prophylaxis after the transplant when the patient is stable and tolerating oral medications.

Duration of T. gondii prophylaxis:

Limited data are available to guide duration of T. gondii prophylaxis—seek expert advice. If the patient is taking trimethoprim+sulfamethoxazole for both PJP and T. gondii prophylaxis, use the duration of PJP prophylaxis as a guide.

Cytomegalovirus (CMV)

Indications for CMV prophylaxis are beyond the scope of these guidelines—refer to local protocols. Pre-emptive treatment is not well studied in lung and heart–lung transplant recipients; universal prophylaxis is the preferred approach.

Start universal prophylaxis on day 1 after transplant. For antiviral regimens, see Universal prophylaxis.

Duration of CMV prophylaxis:

Assess the patient’s level of immune compromise and risk of infection before stopping CMV prophylaxis.

Continue CMV universal prophylaxis for at least 6 months after transplant, or for 1 to 3 months following treatment of rejection episodes (eg with antilymphocyte therapy). Some centres continue CMV prophylaxis indefinitely if there is a serological mismatch between the organ donor and recipient.

Herpes simplex virus (HSV)

Some transplant centres give HSV prophylaxis to patients who are HSV IgG positive—consult local protocols. HSV prophylaxis is not required if the patient is receiving valganciclovir or ganciclovir for CMV prophylaxis.

Start prophylaxis after the transplant when the patient is stable and tolerating oral medications. For antiviral regimens, see here.

Duration of HSV prophylaxis:

Continue HSV prophylaxis for 1 to 3 months. Restart prophylaxis during treatment of rejection episodes and continue for 1 to 3 months.

Suppressive therapy:

If the patient has recurrent oral mucocutaneous or genital HSV infection, suppressive therapy is recommended. See Recurrent oral mucocutaneous herpes and Suppressive therapy for genital herpes.

Mould infection

Some centres recommend routine antifungal prophylaxis against mould infection, while others recommend prophylaxis only for high-risk patients—refer to local protocols.

Prophylaxis is typically started on day 1 after transplant or early in the postoperative period. Antifungal regimens vary between centres; see here for example regimens.

Duration of antifungal prophylaxis:

Antifungal prophylaxis is often continued for 3 months; consult local protocols.

Strongyloides stercoralis

Perform baseline Strongyloides serology in patients with a past or present epidemiological risk of acquiring S. stercoralis [NB2].

S. stercoralis prophylaxis (or pre-emptive treatment) is recommended for:

  • patients with positive Strongyloides serology
  • patients with negative serology who live in or visit an area in which S. stercoralis infection is endemic.

For antimicrobial regimens and duration of therapy, see here.

Burkholderia pseudomallei

Perform baseline B. pseudomallei serology in patients who live or have lived in an endemic region such as tropical regions of Australia [NB3].

B. pseudomallei prophylaxis is recommended for:

  • patients with positive B. pseudomallei serology
  • patients with a history of melioidosis (B. pseudomallei infection) but no clinical evidence of current disease.

Consider giving primary prophylaxis during the wet season [NB4] to patients with negative B. pseudomallei serology who live in or visit an endemic area.

For antimicrobial regimens and duration of therapy, see here.

Other

Hepatitis B virus and tuberculosis reactivation can occur—some patients require antimicrobial treatment. See Hepatitis B virus prophylaxis and Prevention of tuberculosis.

The risk of Listeria monocytogenes meningitis is increased. Consult local protocols and consider dietary and food safety measures to prevent L. monocytogenes infection [NB5].

Note:

NB1: Antimicrobial prophylaxis after organ transplant is a highly specialised area. This table is a general guide to the usual indications for antimicrobial prophylaxis. Seek expert advice from the transplant centre or an infectious diseases physician before changing or stopping prophylaxis.

NB2: Patients at risk of acquiring S. stercoralis include those who were born, live in or visit endemic areas. This includes patients from tropical or central Australia or remote Aboriginal and Torres Strait Islander communities, as well as older patients from southern European countries, and refugees and migrants from developing countries.

NB3: Tropical regions of Australia refer to regions north of 20°S latitude. This includes areas of Queensland north of Mackay, the Northern Territory north of Tennant Creek, and Western Australia north of Port Hedland.

NB4: In tropical regions of Australia, the wet season is usually from October to April. Melioidosis is more common in this season.

NB5: For dietary and food safety measures to prevent L. monocytogenes infection, see the Food Standards Australia New Zealand website.