Greg Calligaro

3.8k total citations
59 papers, 1.3k citations indexed

About

Greg Calligaro is a scholar working on Epidemiology, Infectious Diseases and Surgery. According to data from OpenAlex, Greg Calligaro has authored 59 papers receiving a total of 1.3k indexed citations (citations by other indexed papers that have themselves been cited), including 28 papers in Epidemiology, 27 papers in Infectious Diseases and 25 papers in Surgery. Recurrent topics in Greg Calligaro's work include Tuberculosis Research and Epidemiology (20 papers), Infectious Diseases and Tuberculosis (16 papers) and Pneumonia and Respiratory Infections (11 papers). Greg Calligaro is often cited by papers focused on Tuberculosis Research and Epidemiology (20 papers), Infectious Diseases and Tuberculosis (16 papers) and Pneumonia and Respiratory Infections (11 papers). Greg Calligaro collaborates with scholars based in South Africa, United States and United Kingdom. Greg Calligaro's co-authors include Keertan Dheda, Grant Theron, Jonny Peter, Richard Meldau, Richard N. van Zyl-Smit, Lucas Smith, Brian Allwood, Aliasgar Esmail, Rodney Dawson and Rouxjeane Venter and has published in prestigious journals such as Nature Medicine, SHILAP Revista de lepidopterología and PLoS ONE.

In The Last Decade

Greg Calligaro

54 papers receiving 1.2k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Greg Calligaro South Africa 19 833 745 446 220 101 59 1.3k
Paolo Scarpellini Italy 20 928 1.1× 676 0.9× 302 0.7× 258 1.2× 135 1.3× 41 1.6k
Irene Rivero‐Calle Spain 21 497 0.6× 787 1.1× 150 0.3× 278 1.3× 77 0.8× 87 1.4k
Ann M. Loeffler United States 11 1.1k 1.3× 809 1.1× 708 1.6× 107 0.5× 51 0.5× 19 1.4k
H. Mauch Germany 16 612 0.7× 752 1.0× 369 0.8× 180 0.8× 75 0.7× 59 1.1k
Edward C. Jones‐López United States 20 1.0k 1.2× 842 1.1× 391 0.9× 120 0.5× 136 1.3× 45 1.4k
Niro Okimoto Japan 20 365 0.4× 788 1.1× 234 0.5× 267 1.2× 79 0.8× 119 1.2k
Heather Milburn United Kingdom 15 920 1.1× 994 1.3× 372 0.8× 190 0.9× 57 0.6× 41 1.5k
Richard Meldau South Africa 24 1.3k 1.5× 1.1k 1.4× 714 1.6× 182 0.8× 100 1.0× 42 1.6k
Juan Ruiz‐Manzano Spain 25 705 0.8× 1.2k 1.6× 412 0.9× 451 2.0× 85 0.8× 78 1.8k
David Chadwick United Kingdom 25 551 0.7× 567 0.8× 415 0.9× 77 0.3× 141 1.4× 88 1.6k

Countries citing papers authored by Greg Calligaro

Since Specialization
Citations

This map shows the geographic impact of Greg Calligaro's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Greg Calligaro with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Greg Calligaro more than expected).

Fields of papers citing papers by Greg Calligaro

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Greg Calligaro. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Greg Calligaro. The network helps show where Greg Calligaro may publish in the future.

Co-authorship network of co-authors of Greg Calligaro

This figure shows the co-authorship network connecting the top 25 collaborators of Greg Calligaro. A scholar is included among the top collaborators of Greg Calligaro based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Greg Calligaro. Greg Calligaro is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Zampoli, Marco, et al.. (2025). Cystic Fibrosis Care in South Africa: Facing the Challenge of Diversity and Inequality. Pediatric Pulmonology. 60(10). e71338–e71338.
2.
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Calligaro, Greg, Blanche Cupido, Jacques Scherman, et al.. (2024). Two decades of recipient and donor referrals for heart transplantation to Groote Schuur Hospital, Cape Town, South Africa: A retrospective study. South African Medical Journal. 114(3b). e1371–e1371. 1 indexed citations
4.
Calligaro, Greg, et al.. (2023). Asthma in the intensive care unit: A review of patient characteristics and outcomes. SHILAP Revista de lepidopterología. 29(2). 48–51.
5.
Zampoli, Marco, et al.. (2023). Affordable Cystic Fibrosis (CF) Transmembrane Conductance Regulator Modulator Drugs for CF: All CF Lives Worldwide Matter!. American Journal of Respiratory and Critical Care Medicine. 208(9). 915–916. 11 indexed citations
6.
Calligaro, Greg, Usha Lalla, Coenraad F.N. Koegelenberg, et al.. (2022). The optimal management of the patient with COVID‐19 pneumonia: HFNC, NIV/CPAP or mechanical ventilation?. SHILAP Revista de lepidopterología. 28(3). 119–128. 4 indexed citations
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Calligaro, Greg, Catherine Orrell, Bronwyn Myers, et al.. (2021). Brief psychotherapy administered by non-specialised health workers to address risky substance use in patients with multidrug-resistant tuberculosis: a feasibility and acceptability study. Pilot and Feasibility Studies. 7(1). 28–28. 10 indexed citations
9.
Theron, Grant, Jason Limberis, Rouxjeane Venter, et al.. (2020). Bacterial and host determinants of cough aerosol culture positivity in patients with drug-resistant versus drug-susceptible tuberculosis. Nature Medicine. 26(9). 1435–1443. 47 indexed citations
10.
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Taborda‐Barata, Luís, Greg Calligaro, Richard N. van Zyl-Smit, et al.. (2018). Five-year follow-up of participants diagnosed with chronic airflow obstruction in a South African Burden of Obstructive Lung Disease (BOLD) survey. South African Medical Journal. 108(2). 138–138. 2 indexed citations
12.
Calligaro, Greg, et al.. (2018). Lung transplantation in South Africa: Indications, outcomes and disease-specific referral guidelines. PubMed. 24(3). 118–118. 2 indexed citations
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14.
Calligaro, Greg, et al.. (2017). Acute rejection. Journal of Thoracic Disease. 9(12). 5440–5457. 35 indexed citations
15.
Calligaro, Greg, Lynn S. Zijenah, Jonny Peter, et al.. (2017). Effect of new tuberculosis diagnostic technologies on community-based intensified case finding: a multicentre randomised controlled trial. The Lancet Infectious Diseases. 17(4). 441–450. 57 indexed citations
16.
Schwartz, Ilan S., Nelesh P. Govender, Craig Corcoran, et al.. (2015). Clinical Characteristics, Diagnosis, Management, and Outcomes of Disseminated Emmonsiosis: A Retrospective Case Series. Clinical Infectious Diseases. 61(6). 1004–1012. 59 indexed citations
17.
18.
Allwood, Brian, Luís Taborda‐Barata, Greg Calligaro, et al.. (2014). The burden of obstructive lung disease (BOLD) methodology overestimates the prevalence of COPD: A 5-year follow-up study. European Respiratory Journal. 44(Suppl 58). P1084–P1084. 1 indexed citations
19.
Theron, Grant, Anil Pooran, Jonny Peter, et al.. (2011). Do adjunct tuberculosis tests, when combined with Xpert MTB/RIF, improve accuracy and the cost of diagnosis in a resource-poor setting?. European Respiratory Journal. 40(1). 161–168. 52 indexed citations
20.
Calligaro, Greg, Graeme Meintjes, & Marc Mendelson. (2011). Pulmonary manifestations of the immune reconstitution inflammatory syndrome. Current Opinion in Pulmonary Medicine. 17(3). 180–188. 18 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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2026