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Topic · Epidemiology

Pneumonia and Respiratory Infections

Pneumonia and Respiratory Infections is a research topic within Epidemiology. Science Explorer counts 45k research works in it since 1950. 10.0% of them reached the world's top 10% most cited for their field and year.

This cluster of papers focuses on the management, epidemiology, and vaccination strategies for pneumonia, with a specific emphasis on community-acquired pneumonia and the role of Streptococcus pneumoniae. It covers topics such as the efficacy and safety of pneumococcal conjugate vaccines, burden of disease in children, antimicrobial resistance, and global estimates of morbidity and mortality due to lower respiratory infections.

  • Pneumococcal Conjugate Vaccine
  • Community-Acquired Pneumonia
  • Streptococcus Pneumoniae
  • Antimicrobial Resistance
  • Childhood Pneumonia
  • Invasive Pneumococcal Disease
  • Clinical Practice Guidelines
  • Vaccination
  • Epidemiology
  • Respiratory Infections
Research works
45k
fractional, since 1950
In the world top 10%
4.5k
per year above
Top-10% rate
10.0%
share of its works in the world top 10%
Growth, 2018-21 → 2022-25
+3%
the tick is no change
Largest producer
United States
28% of the 10 largest, 2022-now
Pneumonia and Respiratory Infections

This ranks research output and citation impact. It says nothing about the quality of diagnosis, treatment or care.

Which countries lead Pneumonia and Respiratory Infections research?

By volume, the United States and China publish the most (1.5k and 1.4k works in 2022-now).

By volume, 2022-now

  1. 1 United States 1.5k works
  2. 2 China 1.4k works
  3. 3 India 545 works
  4. 4 United Kingdom 361 works
  5. 5 Spain 329 works
  6. 6 Japan 287 works
  7. 7 France 262 works
  8. 8 Italy 235 works
  9. 9 Germany 193 works
  10. 10 Australia 184 works

How concentrated that is

The same countries as shares of everything the list above accounts for. A node where two countries do two thirds of the work and one spread evenly across twelve read alike as a ranking and not at all alike here.

United States: 28.4%China: 26.1%India: 10.3%United Kingdom: 6.9%6 others listed: 28.3%28%largest
United States1,497 · 28.4%China1,377 · 26.1%India545 · 10.3%United Kingdom361 · 6.9%6 others listed1,489 · 28.3%

Shares of the rows listed above, not of the whole node.

Which institutions lead Pneumonia and Respiratory Infections research?

By volume in 2022-now, Pfizer (United States) publishes the most Pneumonia and Respiratory Infections research, followed by Capital Medical University and Instituto de Salud Carlos III.

By volume, 2022-now

  1. 1 Pfizer (United States)United States 74 works
  2. 2 Capital Medical UniversityChina 48 works
  3. 3 Instituto de Salud Carlos IIISpain 44 works
  4. 4 Merck & Co., Inc., Rahway, NJ, USA (United States)United States 43 works
  5. 5 Harvard UniversityUnited States 41 works
  6. 6 United States Department of Health and Human ServicesUnited States 38 works
  7. 7 Zhejiang UniversityChina 36 works
  8. 8 InsermFrance 35 works
  9. 9 Johns Hopkins UniversityUnited States 32 works
  10. 10 Fudan UniversityChina 31 works

Who are the leading researchers in Pneumonia and Respiratory Infections?

The most-cited researchers publishing on Pneumonia and Respiratory Infections include Christopher J L Murray, Simon Iain Hay and Theo Vos.

  1. 1 Christopher J L Murray United States 583k citations
  2. 2 Simon Iain Hay United States 452k citations
  3. 3 Theo Vos United States 439k citations
  4. 4 Ali H. Mokdad United States 429k citations
  5. 5 Walter Churchill Willett United States 411k citations
  6. 6 Julian P. T. Higgins United Kingdom 390k citations
  7. 7 Zulfiqar Ahmed Bhutta Pakistan 371k citations
  8. 8 Shizuo Akira Japan 342k citations
  9. 9 Jun Wang China 340k citations
  10. 10 Matthias Egger Switzerland 326k citations

Ranked by citations received across their whole record, among researchers with at least three works on this topic.

What are the most cited papers in Pneumonia and Respiratory Infections?

The most cited paper in Pneumonia and Respiratory Infections is "Infectious Diseases Society of America/American Thoracic Society Consensus Guidelines on the Management of Community-Acquired Pneumonia in Adults" (Lionel A. Mandell, Richard G. Wunderink, Antonio Anzueto et al., 2007), with 6,286 citations. Next come "A Prediction Rule to Identify Low-Risk Patients with Community-Acquired Pneumonia" (4,685) and "Management of Adults With Hospital-acquired and Ventilator-associated Pneumonia: 2016 Clinical Practice Guidelines by the Infectious Diseases Society of America and the American Thoracic Society" (4,027).

Most cited papers
#PaperReleasedCitations
1 Infectious Diseases Society of America/American Thoracic Society Consensus Guidelines on the Management of Community-Acquired Pneumonia in Adults Lionel A. Mandell, Richard G. Wunderink, Antonio Anzueto et al. · Clinical Infectious Diseases Open access 3 Feb 2007 6,286
2 A Prediction Rule to Identify Low-Risk Patients with Community-Acquired Pneumonia Michael J. Fine, Thomas E. Auble, Donald M. Yealy et al. · New England Journal of Medicine Open access 23 Jan 1997 4,685
3 Management of Adults With Hospital-acquired and Ventilator-associated Pneumonia: 2016 Clinical Practice Guidelines by the Infectious Diseases Society of America and the American Thoracic Society André C. Kalil, Mark L. Metersky, Michael Klompas et al. · Clinical Infectious Diseases Open access 14 Jul 2016 4,027
4 Mortality Associated With Influenza and Respiratory Syncytial Virus in the United States W. Thompson, David K. Shay, Eric Weintraub et al. · JAMA Open access 8 Jan 2003 3,718
5 Community-Acquired Pneumonia Requiring Hospitalization among U.S. Adults Seema Jain et al. · New England Journal of Medicine Open access 14 Jul 2015 3,456
All 100 most cited papers, with filters and sorting

Where is Pneumonia and Respiratory Infections research done?

The largest centres of Pneumonia and Respiratory Infections research in 2022-now are Beijing (China), London (United Kingdom), Paris (France) and Madrid (Spain). Among places with at least 20 works in it, it is an unusually large share of all research in Rahway.

Largest cities, 2022-now

  1. 1 BeijingChina 208 works
  2. 2 LondonUnited Kingdom 124 works
  3. 3 ParisFrance 117 works
  4. 4 MadridSpain 106 works
  5. 5 ShanghaiChina 104 works
  6. 6 New YorkUnited States 93 works
  7. 7 MoscowRussia 88 works
  8. 8 TokyoJapan 82 works
  9. 9 HangzhouChina 77 works
  10. 10 GuangzhouChina 75 works

Where it is the local speciality

  1. RahwayUS · 33.0 works48×
← less than its size predicts1×more →

Location quotient: how much more of its research is in Pneumonia and Respiratory Infections than the world average.

See Pneumonia and Respiratory Infections on the map

Where is the best place to study Pneumonia and Respiratory Infections?

Among universities, judged by research, Capital Medical University, Zhejiang University and University of Oxford score highest, combining citation excellence, specialisation, size, growth and international reach. Research strength is one signal when choosing where to study; it does not measure teaching.

0%10%20%mean 16.4%fractional works in this field (log) →share of work in the world top 10% →Chinese Academy of M…Zhejiang UniversityCapital Medical Univ…University of Oxford
above the meannear itbelow it

One dot per university in the first ten of the table below, at the default weights. The upper left is the interesting corner: small places doing unusually strong work.

Citation excellenceshare of its work in the world top 10%, 2022-now and all time averaged
40%
Specialisationhow much of its work is in this field, counted up to 10× the world share
10%
Sizeits output in this field, on a log scale
30%
Growthoutput growth, counted from -20% to +20%
10%
Internationalshare of its work with a co-author abroad
10%
Each slider sets a weight; the share it gets of the score is beside it.
#UniversityScoreTop 10%SpecialisationWorksGrowth
1Capital Medical UniversityChina 71.515.0%6.3×48 +13.0%
2Zhejiang UniversityChina 70.218.1%1.9×36 +41.8%
3University of OxfordUnited Kingdom 69.112.9%2.4×24 +7.8%
4Chinese Academy of Medical Sciences & Peking Union Medical CollegeChina 68.319.0%3.1×24 +110.3%
5Harvard UniversityUnited States 66.711.9%1.8×41 -11.3%
6London School of Hygiene & Tropical MedicineUnited Kingdom 66.511.9%18.2×21 -29.3%
7Soochow UniversityChina 65.321.4%2.7×19 +30.4%
8Peking UniversityChina 65.019.0%1.8×26 +36.2%
9Sichuan UniversityChina 64.919.2%1.6×25 +42.0%
10Nanjing Medical UniversityChina 64.315.6%4.6×30 +140.3%

Universities only. The score blends citation excellence (40%), size (30%), specialisation (10%), growth (10%), international reach (10%), 2022-now; growth compares 2018-21 with 2022-25 and counts up to +20%, since a jump from a small base is mostly noise.

Every institution in Pneumonia and Respiratory Infections, country by country

Is Pneumonia and Respiratory Infections research growing?

Output in 2022-2025 was 3% higher than in 2018-2021, peaking in 2025. The fastest-growing topics are Pneumonia and Respiratory Infections.

still counting19801990200020102020
grewheldshrank

The same series as a ribbon: one cell per year, darker for more. The line above answers how much; this answers when.

Its share of all research

Growing output can still be a shrinking share: all of science grows. This is Pneumonia and Respiratory Infections as a percentage of every work published that year, 0.032% in 2024.

still counting0.025%0.050%0.075%Pneumonia and Respiratory Infections0.036% in 202519801990200020102020

Fractional works of Pneumonia and Respiratory Infections over all fractional works that year. How the balance of science has shifted.

How much of it reaches the world top 10%

Year by year.

still counting5%10%15%Pneumonia and Respiratory Infections10.2% in 2025200020102020

Of each year's works in it, the share that reached the world's 10% most cited for their field and year. A field is the world for its own topics, so there is no other line to hold it against.

Which topics inside it are moving

Growth and decline on one axis around a shared zero. Two lists side by side hide the thing that matters: whether the growth dwarfs the decline, or the other way round.

Discussion

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