COVID-19 and healthcare impacts
COVID-19 and healthcare impacts is a research topic within Oncology. Science Explorer counts 29k research works in it since 1951. 14.8% of them reached the world's top 10% most cited for their field and year.
This cluster of papers focuses on the impact of the COVID-19 pandemic on cancer patients, healthcare systems, and clinical outcomes. It covers topics such as mortality, surgery, delayed diagnosis and treatment, emergency department visits, and the management of cancer care during the pandemic.
- Cancer
- COVID-19
- Pandemic
- Mortality
- Surgery
- Healthcare
- Emergency Department Visits
- Oncology
- Clinical Trials
- Stroke
- Research works
- 29k fractional, since 1951
- In the world top 10%
- 4.3k per year above
- Top-10% rate
- 14.8% share of its works in the world top 10%
- Growth, 2013–17 → 2018–22
- +5575% the tick is no change
This ranks research output and citation impact. It says nothing about the quality of diagnosis, treatment or care.
Which countries lead COVID-19 and healthcare impacts research?
By volume, the United States and the United Kingdom publish the most (3.3k and 978 works in 2022–2025).
By volume, 2022–2025
- 1 United States 3.3k works
- 2 United Kingdom 978 works
- 3 India 543 works
- 4 Italy 499 works
- 5 Brazil 471 works
- 6 Türkiye 459 works
- 7 China 454 works
- 8 Canada 409 works
- 9 Spain 352 works
- 10 Germany 311 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.
Shares of the rows listed above, not of the whole node.
Which institutions lead COVID-19 and healthcare impacts research?
By volume in 2022–2025, University of North Carolina at Chapel Hill publishes the most COVID-19 and healthcare impacts research, followed by Sağlık Bilimleri Üniversitesi and Harvard University.
By volume, 2022–2025
- 1 University of North Carolina at Chapel HillUnited States 98 works
- 2 Sağlık Bilimleri ÜniversitesiTürkiye 57 works
- 3 Harvard UniversityUnited States 46 works
- 4 University of TorontoCanada 41 works
- 5 Johns Hopkins UniversityUnited States 32 works
- 6 University College LondonUnited Kingdom 31 works
- 7 The University of Texas MD Anderson Cancer CenterUnited States 29 works
- 8 Yale UniversityUnited States 29 works
- 9 Icahn School of Medicine at Mount SinaiUnited States 28 works
- 10 University of MichiganUnited States 28 works
Who are the leading researchers in COVID-19 and healthcare impacts?
The most-cited researchers publishing on COVID-19 and healthcare impacts include John P. A. Ioannidis, Nelson Alvis‐Guzmán and Salman Rawaf.
- 1 John P. A. Ioannidis United States 8k citations
- 2 Nelson Alvis‐Guzmán Colombia 7.7k citations
- 3 Salman Rawaf United States 7k citations
- 4 Florian Fischer United States 7k citations
Ranked by citations received across their whole record, among researchers with at least three works on this topic.
Where is COVID-19 and healthcare impacts research done?
The largest centres of COVID-19 and healthcare impacts research in 2022–2025 are London (United Kingdom), New York (United States), Istanbul (Türkiye) and Boston (United States). Among places with at least 20 works in it, it is an unusually large share of all research in The Bronx.
Largest cities, 2022–2025
Where it is the local speciality
- The BronxUS · 21.9 works5.7×
Location quotient: how much more of its research is in COVID-19 and healthcare impacts than the world average.
Where is the best place to study COVID-19 and healthcare impacts?
Among universities, judged by research, London School of Hygiene & Tropical Medicine, Harvard University and Victor Babeș University of Medicine and Pharmacy Timișoara score highest, combining excellence, specialisation, size, growth and international reach. Research strength is one signal when choosing where to study; it does not measure teaching.
One dot per university in the table below. The upper left is the interesting corner: small places doing unusually strong work.
| # | University | Score | Top 10% | Specialisation | Works | Growth |
|---|---|---|---|---|---|---|
| 1 | London School of Hygiene & Tropical MedicineUnited Kingdom | 62.7 | 32.9% | 6.7× | 12 | — |
| 2 | Harvard UniversityUnited States | 59.8 | 22.8% | 3.2× | 46 | +99.8% |
| 3 | Victor Babeș University of Medicine and Pharmacy TimișoaraRomania | 56.1 | 22.5% | 13.7× | 14 | — |
| 4 | Sağlık Bilimleri ÜniversitesiTürkiye | 48.1 | 1.2% | 8.8× | 57 | — |
| 5 | University of OxfordUnited Kingdom | 45.3 | 24.9% | 1.8× | 27 | — |
| 6 | Karolinska InstitutetSweden | 45.3 | 18.9% | 3.9× | 20 | — |
| 7 | University of TorontoCanada | 43.6 | 17.6% | 2.5× | 41 | — |
| 8 | Albert Einstein College of MedicineUnited States | 42.7 | 23.4% | 4.9× | 10 | — |
| 9 | Johns Hopkins UniversityUnited States | 42.1 | 19.3% | 2.6× | 32 | — |
| 10 | University of North Carolina at Chapel HillUnited States | 41.5 | 2.9% | 5.0× | 98 | — |
Universities only. Score blends excellence (30%), specialisation (25%), size (20%), growth (15%) and international reach (10%), 2015–2022; growth compares 2010–14 with 2015–19.
Is COVID-19 and healthcare impacts research growing?
Output in 2018–2022 was 5575% higher than in 2013–2017, peaking in 2021. The fastest-growing topics are COVID-19 and healthcare impacts.
The same series as a ribbon — one cell per year, darker for more. The line above answers how much; this answers when.
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.