Community-acquired pneumonia — the Pakistan pathway
The national guideline offers amoxicillin or a macrolide. One of those has expired. Here is which, why, and what the resistance data does not change.
The international guideline tells you not to use a macrolide here. IDSA 2019 recommends macrolides only if the local pneumococcal resistance is below 25%. Pakistani Streptococcus pneumoniae macrolide susceptibility was 33% in 2015–17 — resistance of roughly two thirds, far beyond the threshold the guideline sets. Macrolide monotherapy is therefore not an empiric option for CAP in Pakistan, by the international guideline's own criterion.
Every recommendation here carries a divergence badge.Same as international guidelinePakistan-adaptedLocal data onlyNational guideline outdated
This page shows the national guideline as written first, then reconciles it against later local resistance data — rather than silently rewriting it. A stale guideline is not a wrong guideline; it is one that needs reading against current numbers.
Decision-support only. If your hospital produces an antibiogram, use it and ignore this page for empiric choice. If it does not, this is the argument for producing one — and the two series here differ enough that regional data genuinely changes the answer.
✓ Clinically reviewed by Dr Soban Bin Salman Meer, MBBS · 05 Aug 2026.
Step 1 · Is it pneumonia — and is it bacterial?
Pakistan Chest Society
Imaging is part of the definition, not an optional extra Same as international guideline
In addition to suggestive clinical features, a demonstrable infiltrate by chest radiograph or other imaging technique, with or without supporting microbiological data, is required for the diagnosis of pneumonia.
A febrile cough with crackles and a clear film is not pneumonia, and treating it as such is a large share of the avoidable antibiotic use driving the resistance figures in step 4.
The differential that matters most here Pakistan-adapted
Pakistan carries one of the world's highest tuberculosis burdens. Subacute onset, weight loss, night sweats, haemoptysis, upper-lobe or cavitating changes, or failure to respond to an appropriate antibiotic should all prompt sputum testing for TB rather than a second course of antibiotics. Fluoroquinolones are a particular trap: they have antimycobacterial activity, so an empiric respiratory fluoroquinolone can partially treat undiagnosed TB, blunt the clinical picture, delay diagnosis and select for fluoroquinolone-resistant TB.
Why it is flagged: International CAP guidelines are written for settings where TB is rare. Here it is not, and the fluoroquinolone interaction with TB is a genuine reason to prefer a beta-lactam backbone.
Step 2 · Severity and site of care
Pakistan Chest Society
CURB-65 to decide site of care
Severity-of-illness scores, such as the CURB-65 (or CRB) criteria (confusion, uremia, respiratory rate, low blood pressure, age 65 years or greater), or prognostic models, such as the Pneumonia Severity Index (PSI), can be used to identify patients with CAP who may be candidates for outpatient treatment.
Confusion — new disorientation in person, place or time
Blood pressure — systolic below 90 mmHg or diastolic 60 mmHg or below
Age 65 years or over
The score is not the whole decision. The guideline is explicit that the score is not the whole decision: physicians often admit patients who could be managed as outpatients, but the score "must be influenced by other factors such as compliance and reliability of taking oral medication as well as the availability of family support." In a setting where a patient may not return, that judgement carries more weight than the number.
When it is an ICU decision
Major criteria — either one means ICU
Invasive mechanical ventilation
Septic shock with the need for vasopressors
Minor criteria — three or more means ICU or high-level monitoring
Respiratory rate above 30 breaths/min
PaO₂/FiO₂ ratio below 250
Multilobar infiltrates
Confusion or disorientation
Uraemia — blood urea nitrogen above 20 mg/dL
Leukopenia — white cell count below 4,000/mm³, as a result of infection alone
Either major criterion means direct ICU admission. Three or more minor criteria mean direct admission to ICU or a high-level monitoring unit.
A need for non-invasive ventilation can substitute for a respiratory rate above 30 or a PaO₂/FiO₂ ratio below 250. The guideline notes that patients transferred to ICU within the first 24–48 hours have worse mortality and morbidity than those admitted directly — which is the argument for scoring properly on arrival.
Other criteria the guideline suggests considering: hypoglycaemia in a non-diabetic patient, acute alcoholism or withdrawal, hyponatraemia, unexplained metabolic acidosis or raised lactate, cirrhosis, and asplenia.
Which category is this patient?
Step 3 · What the national guideline says
Pakistan Chest Society — Guidelines for the Management of Community Acquired Pneumonia in Adults
National guideline outdated This is the national guideline, and it is the one to work from. It also predates the resistance data below, which is why one of its recommendations no longer holds.
Reproduced as written, before any reconciliation. Step 5 shows what current local susceptibility does and does not change.
Step 4 · What the resistance data says
Country data on AMR in Pakistan in the context of community-acquired respiratory tract infections. Susceptibility figures are 2015–17, CLSI breakpoints.
Streptococcus pneumoniaeLocal data only
The commonest cause of adult CAP in Pakistan. Susceptibility 2015–17, CLSI breakpoints; penicillin and cefaclor both showed declining susceptibility over time.
Agent
Susceptible
Amoxicillin
High — maintained
Co-amoxiclav
High — maintained
Cefuroxime, cefpodoxime, ceftriaxone
High — maintained
Macrolides
33%
Cefaclor
28.7%
Penicillin
23.4%
Haemophilus influenzaeLocal data only
Susceptibility 2015–17, CLSI breakpoints.
Agent
Susceptible
Co-amoxiclav
100%
Levofloxacin
77.1%
Moxifloxacin
75.4%
Co-trimoxazole
41%
Penicillin at 23.4% does not mean amoxicillin fails. Reading those two lines together is the commonest misinterpretation of a pneumococcal sensitivity report. Amoxicillin retained high susceptibility in the same dataset in which penicillin sat at 23.4%. The gap is a breakpoint artefact — CLSI applies stricter thresholds to oral penicillin than to amoxicillin at adequate dose in non-meningeal infection. Do not abandon amoxicillin because the penicillin line looks bad.
What this adds up to
Amoxicillin, co-amoxiclav and the later cephalosporins held up. Amoxicillin at adequate dose remains a reasonable oral backbone.
Macrolides did not, at 33%. That removes both macrolide monotherapy and the reflexive azithromycin add-on unless there is a specific reason for atypical cover.
Co-trimoxazole at 41% against H. influenzae is not an empiric option.
Respiratory fluoroquinolones held up better against H. influenzae (75–77%) than fluoroquinolones did against urinary E. coli — but they remain a drug class worth reserving.
Step 5 · Reconciled — what to actually start
National guideline read against current local susceptibility
Step 6 · Cultures, special cases, and the system around you
Pakistan Chest Society · AMR country data
What the guideline says about cultures — and why to send them anyway Pakistan-adapted
The overall low yield and infrequent positive impact on clinical care argue against the routine use of common tests, such as blood and sputum cultures. On the other hand these cultures may have a major impact on the care of an individual patient, and are important for epidemiologic reasons, including the antibiotic susceptibility patterns used to develop treatment guidelines.
That second clause is the one that matters in Pakistan. The susceptibility data on this page is thin precisely because cultures are sent inconsistently. Sending them in admitted patients is how the next version of this pathway gets better numbers.
Why it is flagged: The cost-benefit of routine culture shifts when national surveillance data is scarce and resistance is changing fast.
The guideline's special concerns
If Pseudomonas is a consideration: the β-lactam above plus an aminoglycoside or an antipneumococcal fluoroquinolone; or an antipneumococcal, antipseudomonal β-lactam — piperacillin-tazobactam, cefepime, imipenem or meropenem — plus either ciprofloxacin or levofloxacin 750 mg.
If community-acquired MRSA is a consideration: add vancomycin or linezolid.
Both are conditional on a reason to suspect the organism. Neither is an empiric default, and treating them as one is how carbapenems and vancomycin stop working.
Three things about antibiotics in Pakistan that no international guideline accounts for
Antibiotics are widely available without prescription
The Drug Act of 1967 prohibits over-the-counter sale, but enforcement is inadequate — throughout Pakistan it is possible to obtain antibiotics without a legitimate prescription, generally on a simple request. Most classes are sold this way. Assume prior antibiotic exposure that the patient may not report as such, and ask specifically.
Pakistan is the third-highest antibiotic-consuming low- and middle-income country
That consumption is the engine behind the susceptibility figures on this page. Every avoidable prescription makes the next empiric choice worse.
Substandard and falsified products are a real confounder
Antibiotics account for 16.9% of all products reported as substandard or falsified in Pakistan. A patient who has genuinely failed a correct antibiotic at a correct dose may have received an inadequate product rather than harboured a resistant organism.
Several internationally recommended antibiotics are simply unavailable here
That is stated explicitly as a barrier to following international guidelines. A pathway that recommends a drug you cannot obtain is not a pathway.
Common questions
Can I use azithromycin for pneumonia in Pakistan?
Not as monotherapy. IDSA 2019 recommends macrolides only where local pneumococcal resistance is below 25%. Pakistani pneumococcal macrolide susceptibility was 33% in 2015–17 — resistance of roughly two thirds. The international guideline itself tells you not to use it here.
The Pakistan Chest Society guideline says amoxicillin or a macrolide. Which one?
Amoxicillin. The guideline offers both for a previously healthy outpatient, but it predates the resistance data. Amoxicillin retained high pneumococcal susceptibility; the macrolide option has not held up.
Penicillin susceptibility is only 23.4%. Does that mean amoxicillin will not work?
No, and this is the commonest misreading of a pneumococcal report. Amoxicillin retained high susceptibility in the same dataset. The gap is a breakpoint artefact — CLSI applies stricter thresholds to oral penicillin than to amoxicillin at adequate dose in non-meningeal infection.
Why avoid respiratory fluoroquinolones as a first choice?
They work microbiologically, but Pakistan has one of the highest tuberculosis burdens in the world and fluoroquinolones have antimycobacterial activity. An empiric fluoroquinolone can partially treat undiagnosed TB, blunt the picture, delay diagnosis and select for fluoroquinolone-resistant TB.
When does a CAP patient need ICU?
Either major criterion — invasive mechanical ventilation, or septic shock needing vasopressors — means direct ICU admission. Three or more minor criteria mean direct admission to ICU or a high-level monitoring unit.
Do I need a chest X-ray to diagnose pneumonia?
Yes. The guideline states that a demonstrable infiltrate on chest radiograph or other imaging, with or without microbiology, is required for the diagnosis. A febrile cough with a clear film is not pneumonia.
Should I send blood and sputum cultures?
The guideline notes the low yield argues against routine culture, but also that cultures matter for the susceptibility patterns used to build treatment guidelines. In Pakistan that second reason carries real weight — the local data is thin precisely because cultures are sent inconsistently.
How current is the Pakistan Chest Society guideline?
It predates the susceptibility data used on this page, which is why one of its first-line options no longer holds. This pathway presents the guideline as written and then reconciles it against the later figures, rather than silently rewriting it.
Clinically reviewed by Dr Soban Bin Salman Meer, MBBS
MBBS — Postgraduate Trainee in the Department of Urology at the Pakistan Institute of Medical Sciences (PIMS), Islamabad. Graduated from Federal Medical & Dental College, Islamabad.
Sources
Pakistan Chest Society — Guidelines for the Management of Community Acquired Pneumonia in Adults. The national guideline, and the source of every severity criterion and empiric regimen quoted verbatim on this page.
Country data on AMR in Pakistan in the context of community-acquired respiratory tract infections: links between antibiotic susceptibility, local and international antibiotic prescribing guidelines, access to medicine and clinical outcome. Source of the S. pneumoniae and H. influenzae susceptibility figures (2015–17, CLSI breakpoints), the IDSA 2019 macrolide threshold, and the access, over-the-counter and substandard-medicine data.
MMIDSP 2019 guidelines cover other community-acquired respiratory infections — acute otitis media and acute bacterial rhinosinusitis — and are the same society behind the typhoid guideline used elsewhere on this site.
NOTE ON CURRENCY: the national CAP guideline predates the susceptibility data above. This page presents the guideline as written, then reconciles it against the later resistance figures, rather than silently rewriting it.
Background reading — which half of the national guideline expired, the breakpoint artefact that makes people abandon amoxicillin, and why the fluoroquinolone question is really about TB: pneumonia in Pakistan.