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Topic · Public Health, Environmental and Occupational Health

Travel-related health issues

Travel-related health issues is a research topic within Public Health, Environmental and Occupational Health. Science Explorer counts 13k research works in it since 1950. 10.3% of them reached the world's top 10% most cited for their field and year.

This cluster of papers focuses on the health risks, infectious diseases, and preventive measures related to international travel, with a particular emphasis on topics such as travelers' diarrhea, respiratory infections during mass gatherings like Hajj, and the use of Rifaximin. It also discusses the importance of health surveillance and public health interventions for travelers.

  • Travelers' Diarrhea
  • Mass Gatherings
  • Infectious Diseases
  • Respiratory Infections
  • Hajj
  • Preventive Measures
  • Rifaximin
  • International Travel
  • Health Surveillance
  • Public Health
Research works
13k
fractional, since 1950
In the world top 10%
1.3k
per year above
Top-10% rate
10.3%
share of its works in the world top 10%
Growth, 2018-21 → 2022-25
-6%
the tick is no change
Largest producer
United States
30% of the 10 largest, 2022-now
Travel-related health issues

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

Which countries lead Travel-related health issues research?

By volume, the United States and China publish the most (445 and 170 works in 2022-now).

By volume, 2022-now

  1. 1 United States 445 works
  2. 2 China 170 works
  3. 3 United Kingdom 158 works
  4. 4 India 139 works
  5. 5 France 130 works
  6. 6 Germany 121 works
  7. 7 Australia 108 works
  8. 8 Türkiye 82 works
  9. 9 Saudi Arabia 77 works
  10. 10 Japan 69 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: 29.7%China: 11.4%United Kingdom: 10.5%India: 9.3%6 others listed: 39.1%30%largest
United States445 · 29.7%China170 · 11.4%United Kingdom158 · 10.5%India139 · 9.3%6 others listed586 · 39.1%

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

Which institutions lead Travel-related health issues research?

By volume in 2022-now, Harvard University publishes the most Travel-related health issues research, followed by United States Department of Defense and Centre National de la Recherche Scientifique.

By volume, 2022-now

  1. 1 Harvard UniversityUnited States 15 works
  2. 2 United States Department of DefenseUnited States 15 works
  3. 3 Centre National de la Recherche ScientifiqueFrance 14 works
  4. 4 InsermFrance 13 works
  5. 5 University of OxfordUnited Kingdom 12 works
  6. 6 United States Department of Health and Human ServicesUnited States 11 works
  7. 7 Umm al-Qura UniversitySaudi Arabia 11 works
  8. 8 University of ZurichSwitzerland 11 works
  9. 9 The University of QueenslandAustralia 10 works
  10. 10 Uniformed Services University of the Health SciencesUnited States 9 works

Who are the leading researchers in Travel-related health issues?

The most-cited researchers publishing on Travel-related health issues include Simon Iain Hay, Jost Bruno Jonas and Matthias Egger.

  1. 1 Simon Iain Hay United States 452k citations
  2. 2 Jost Bruno Jonas Germany 350k citations
  3. 3 Matthias Egger Switzerland 326k citations
  4. 4 Yousef Saleh Khader Jordan 274k citations
  5. 5 Martin McKee United Kingdom 270k citations
  6. 6 Kenji Shibuya Japan 242k 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 Travel-related health issues?

The most cited paper in Travel-related health issues is "Hay fever, hygiene, and household size." (David Peter Strachan, 1989), with 5,108 citations. Next come "Pandemics, tourism and global change: a rapid assessment of COVID-19" (4,772) and "Sick individuals and sick populations" (3,744).

Most cited papers
#PaperReleasedCitations
1 Hay fever, hygiene, and household size. David Peter Strachan · BMJ Open access 18 Nov 1989 5,108
2 Pandemics, tourism and global change: a rapid assessment of COVID-19 Stefan Gößling, Daniel J. Scott, C. Michael Hall · Journal of Sustainable Tourism Open access 27 Apr 2020 4,772
3 Sick individuals and sick populations Geoffrey A Rose · International Journal of Epidemiology Jun 2001 3,744
4 Climate Warming and Disease Risks for Terrestrial and Marine Biota C. Drew Harvell, Charles E. Mitchell, Jessica R. Ward et al. · Science 21 Jun 2002 2,767
5 Estimating the asymptomatic proportion of coronavirus disease 2019 (COVID-19) cases on board the Diamond Princess cruise ship, Yokohama, Japan, 2020 Kenji Mizumoto, Katsushi Kagaya, Alexander E. Zarebski et al. · Eurosurveillance Open access 12 Mar 2020 2,558
All 101 most cited papers, with filters and sorting

Where is Travel-related health issues research done?

The largest centres of Travel-related health issues research in 2022-now are London (United Kingdom), Paris (France), Beijing (China) and Riyadh (Saudi Arabia). Among places with at least 20 works in it, it is an unusually large share of all research in Riyadh.

Largest cities, 2022-now

  1. 1 LondonUnited Kingdom 55 works
  2. 2 ParisFrance 46 works
  3. 3 BeijingChina 34 works
  4. 4 RiyadhSaudi Arabia 32 works
  5. 5 BangkokThailand 21 works
  6. 6 TokyoJapan 21 works
  7. 7 MadridSpain 20 works
  8. 8 SydneyAustralia 20 works
  9. 9 MelbourneAustralia 20 works
  10. 10 New YorkUnited States 20 works

Where it is the local speciality

  1. RiyadhSA · 31.7 works4.8×
← less than its size predicts1×more →

Location quotient: how much more of its research is in Travel-related health issues than the world average.

See Travel-related health issues on the map

Where is the best place to study Travel-related health issues?

Among universities, judged by research, Umm al-Qura University, University of Oxford and Harvard University 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%30%mean 15.57%fractional works in this field (log) →share of work in the world top 10% →Umm al-Qura UniversityHarvard UniversityUniversity of OxfordUniversity of Zurich
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
1Umm al-Qura UniversitySaudi Arabia 71.521.3%19.6×11 +48.0%
2University of OxfordUnited Kingdom 70.019.2%3.7×12 +63.8%
3Harvard UniversityUnited States 64.719.3%2.1×15 -22.0%
4University of ZurichSwitzerland 61.112.8%7.1×11 +7.9%
5King Saud UniversitySaudi Arabia 53.918.8%4.2×9 +11.9%
6The University of QueenslandAustralia 51.513.7%4.9×10 +41.0%
7Johns Hopkins UniversityUnited States 51.023.9%2.6×9 -50.7%
8Universität HamburgGermany 29.613.4%5.3×9 -12.5%
9UNSW SydneyAustralia 23.65.8%4.0×8 +3.6%
10All India Institute of Medical SciencesIndia 19.17.5%3.3×8 +189.6%

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 Travel-related health issues, country by country

Is Travel-related health issues research growing?

Output in 2022-2025 was 6% lower than in 2018-2021, peaking in 2020.

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 Travel-related health issues as a percentage of every work published that year, 0.0097% in 2024.

still counting0.0050%0.010%0.015%Travel-related health issues0.011% in 202519801990200020102020

Fractional works of Travel-related health issues 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%Travel-related health issues10.5% 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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