Short Versus Standard of Care Antibiotic Duration for Children Hospitalized for CAP

February 26, 2026 updated by: Michelle Mitchell, Medical College of Wisconsin

Short Versus Standard of Care Antibiotic Duration for Hospitalized Children With Uncomplicated Community-acquired Pneumonia: a Non-inferiority, Randomized Controlled Trial.

The goal of this open label, randomized, non-inferiority clinical trial is to compare the treatment success of a 5 day antibiotic course versus a standard antibiotic course (usually 7-14 days of antibiotics) in hospitalized children aged 3 months to 18 years, with uncomplicated community acquired pneumonia.

The main questions it aims to answer are:

  • Does a 5 day course work as well as standard (longer) courses of antibiotics for treating community acquired pneumonia in children?
  • Does a 5 day course cause less antibiotic side effects compared to a standard (longer) course of antibiotics in children with community acquired pneumonia?

Participants will

  • be randomly assigned to either receive 5 total days or a total duration decided by the treating physician
  • receive a brief follow up questionnaire regarding clinical symptoms, follow up care/antibiotics, and side effects via phone or email at days 5 and 14 from the start of antibiotics

Researchers will compare the experimental group (receiving 5 days duration) with the control group (standard duration) to see if 5 days is as successful as a standard duration.

Study Overview

Detailed Description

This is an open label, randomized, non-inferiority clinical trial to determine if a 5-day antibiotic course works as well compared to a standard antibiotic course (usually 7-10 days of antibiotics) in hospitalized children who are aged 3 months to less than 18 years old, with uncomplicated community acquired pneumonia.

We will recruit 150 participants meeting inclusion/exclusion criteria. Participants will be randomized to one of the study groups. In the experimental group, the participant will receive a total antibiotic course of 5 days. In the other group (control group), participants will receive the standard-of-care antibiotic course (the duration will be decided by the primary treating physician in this group). The selection of antibiotic therapy will be made by the treating physician, generally in accordance with the institutional clinical practice guideline on community acquired pneumonia, prior to enrollment in the study. Other medical care, aside from the treatment duration, will be the same and will be guided by the primary treating doctor. The primary treating doctor will also decide when the participant is medically ready for discharge from the hospital.

During the consenting process, a member of the research team will verify the contact numbers or email of the parent(s)/guardian of participant to be used after discharge for follow-up communication. Every participant's parent/guardian will receive a text message/email questionnaire on day 5 and day 14 after the start of antibiotics to assess for clinical improvement, side effect(s) to the antibiotics, recurrence of fever, or need for additional antibiotics or other medical care. Participants parent(s)/guardian will be contacted by phone for additional information if there is concern for a failure or significant medical concern.

The primary objective of this study is to compare the failure rate between a short course (5-days) and standard antibiotic course (usually 7-10 days of antibiotics) of antibiotics in hospitalized children with uncomplicated pneumonia. Failure will be defined as the clinical need for additional antibiotic treatment, emergency department visit or readmission to the hospital for a suspected lower respiratory tract infection within 14 days of treatment initiation.

The secondary objective will compare the rate of adverse drug events between short and long-course durations of antibiotic therapy in children hospitalized for CAP. Adverse drug events include any allergic reaction such as skin rash, itching or other and/or abdominal symptoms such as vomiting, stomach pain and diarrhea.

Data will be summarized by n (%) or mean and standard deviation (SD) or median and interquartile range (IQR). Continuous variables will be compared by t-test while categorical variables will be compared by Chi-square or Fisher's exact test. A 95% CI will be calculated for the difference in failure rate between the shorter antibiotic course (5-day) group and the standard course group. Non-inferiority will be declared if the 95% CI lies below 10%. P<0.05 will be considered statistically significant. Data will be analyzed by SAS version 9.4 (SAS Institute Inc., Cary, NC) and SPSS version 28.0 (IBM Corp., Armonk, NY).

Study Type

Interventional

Enrollment (Estimated)

236

Phase

  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

    • Wisconsin
      • Milwaukee, Wisconsin, United States, 53226
        • Recruiting
        • Childrens Wisconsin
        • Principal Investigator:
          • Michelle Mitchell, MD
        • Sub-Investigator:
          • khaled al zubaidi, MD
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria (ALL of the following must be met):

  1. Children aged 3 months to <18 years old
  2. Hospitalized in either the acute care or the pediatric intensive care units
  3. Clinically diagnosed with uncomplicated bacterial community acquired pneumonia (as determined by the treating physician)
  4. Radiological findings suggestive of pneumonia (such as consolidation, lobar or interstitial infiltrates)
  5. Achieved clinical stability within 72 hours from the first antibiotic dose (clinical stability includes being off supplemental oxygen/ventilatory support and temperature remaining < 38 Celsius).

Exclusion Criteria (presence of ANY of the following will exclude a potential participant):

  1. Hemodynamic instability at any point during hospitalization that required inotropic support
  2. Requirement of respiratory support > 72 hours
  3. Presence of a parapneumonic effusion >10 mm on decubitus x-ray or greater than ¼ of hemithorax opacified on chest imaging
  4. Need for chest tube placement
  5. Extrapulmonary involvement (ie: another infection located outside of the lungs) except for otitis media if the planned treatment is ≤ 5 days
  6. Pneumonia caused by known staphylococcus aureus identified from culture (blood, bronchoalveolar aspirate, tracheal aspirate, or pleural fluid)
  7. Antibiotic course started >72 hours after admission
  8. Antibiotics used for > 24 hours within the 2 weeks prior to admission
  9. Chronic respiratory illness other than asthma or reactive airway disease
  10. Immunocompromised patient (primary or secondary)
  11. Primary physician refusal
  12. Parent refusal
  13. Non-English speakers
  14. Pregnant or lactating female
  15. Participant will become ≥ 18 years old at or before the time of day 14 follow up
  16. Inability to adhere to follow up

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Short course antibiotic duration
The participants in this group will receive a total antibiotic course of 5 days including the number of days received during their hospital admission and following hospital admission combined.
Ampicillin is an intravenous antibiotic commonly used in the initial treatment of children hospitalized with community-acquired pneumonia.
Ceftriaxone is an intravenous antibiotic commonly used in the initial treatment of children hospitalized with community-acquired pneumonia.
Other Names:
  • Rocephin
Amoxicillin is an oral antibiotic commonly used in the treatment of children hospitalized with community-acquired pneumonia to complete the antibiotic course after discharge.
Ampicillin/Sulbactam is an intravenous antibiotic commonly used in the initial treatment of children hospitalized with community-acquired pneumonia.
Other Names:
  • Unasyn
Amoxicillin-clavulanate is an oral antibiotic commonly used in the treatment of children hospitalized with community-acquired pneumonia to complete the antibiotic course after discharge.
Other Names:
  • Augmentin
Clindamycin is an antibiotic that can be given intravenously or orally that is sometimes used in the treatment of children hospitalized or discharged with community-acquired pneumonia.
Other Names:
  • Cleocin
Cefprozil is an oral antibiotic sometimes used in the treatment of children hospitalized with community-acquired pneumonia to complete the antibiotic course after discharge.
Other Names:
  • Cefzil
Levofloxacin is an antibiotic that can be given intravenously or orally that is sometimes used in the treatment of children hospitalized or discharged with community-acquired pneumonia.
Other Names:
  • Levaquin
Active Comparator: Standard of care antibiotic duration
Participants will receive the standard-of-care antibiotic course in this group. That is, the duration of antibiotics will be decided by the primary treating physician in this group. The antibiotic course will include the number of days received during the participant's hospital admission and following hospital admission combined.
Ampicillin is an intravenous antibiotic commonly used in the initial treatment of children hospitalized with community-acquired pneumonia.
Ceftriaxone is an intravenous antibiotic commonly used in the initial treatment of children hospitalized with community-acquired pneumonia.
Other Names:
  • Rocephin
Amoxicillin is an oral antibiotic commonly used in the treatment of children hospitalized with community-acquired pneumonia to complete the antibiotic course after discharge.
Ampicillin/Sulbactam is an intravenous antibiotic commonly used in the initial treatment of children hospitalized with community-acquired pneumonia.
Other Names:
  • Unasyn
Amoxicillin-clavulanate is an oral antibiotic commonly used in the treatment of children hospitalized with community-acquired pneumonia to complete the antibiotic course after discharge.
Other Names:
  • Augmentin
Clindamycin is an antibiotic that can be given intravenously or orally that is sometimes used in the treatment of children hospitalized or discharged with community-acquired pneumonia.
Other Names:
  • Cleocin
Cefprozil is an oral antibiotic sometimes used in the treatment of children hospitalized with community-acquired pneumonia to complete the antibiotic course after discharge.
Other Names:
  • Cefzil
Levofloxacin is an antibiotic that can be given intravenously or orally that is sometimes used in the treatment of children hospitalized or discharged with community-acquired pneumonia.
Other Names:
  • Levaquin

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Treatment failure rate
Time Frame: 14 days from the first dose antibiotics
Treatment failure is defined as the clinical need for additional antibiotic treatment, an emergency department (ED) visit, or readmission to the hospital for a suspected lower respiratory tract infection within 14 days of treatment initiation.
14 days from the first dose antibiotics

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Adverse drug event rate
Time Frame: 14 days from the first dose antibiotics
Adverse drug events include allergic reactions, skin rash, abdominal symptoms (such as vomiting, stomach pain, or diarrhea), or other plausible associated complaints described by the parent(s)/guardian.
14 days from the first dose antibiotics

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Principal Investigator: Michelle Mitchell, Medical College of Wisconsin

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

August 22, 2024

Primary Completion (Estimated)

May 1, 2028

Study Completion (Estimated)

May 1, 2028

Study Registration Dates

First Submitted

July 2, 2024

First Submitted That Met QC Criteria

July 2, 2024

First Posted (Actual)

July 10, 2024

Study Record Updates

Last Update Posted (Actual)

March 2, 2026

Last Update Submitted That Met QC Criteria

February 26, 2026

Last Verified

February 1, 2026

More Information

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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