Rigorous peer-reviews are the basis of high-quality academic publishing. Thanks to the great efforts of our reviewers, Microbiology Research was able to maintain its standards for the high quality of its published papers. Thanks to the contribution of our reviewers, in 2021, the median time to first decision was 21 days and the median time to publication was 51 days. The editors would like to extend their gratitude and recognition to the following reviewers for their precious time and dedication, regardless of whether the papers they reviewed were finally published:
| Agata Janowska | Ji Hyung Kim |
| Agnieszka Kaczmarczyk-Ziemba | Jiae Kim |
| Ahmed Mustafa | Jing-Quan Wang |
| Ákos Gellért | Joana Rolo |
| Alessandra Borsetti | Joanna Kruszewska |
| Alessandra Carrubba | Jonathan Perreault |
| Alina Pyka | José Luis Martínez |
| Amira Ayad | Josepa Gené |
| Ana Rita Henriques | Julia Esclapez |
| Anastasia A. Ivanova | Julia Willett |
| Aneta Nowakiewicz | Julie Flood |
| Anna Czubaszek | Kai-Yin Lo |
| Anna Duda-Madej | Kamalika Mojumdar |
| Anna Maria Puglia | Kathryn Knoop |
| Anna Ogrodowczyk | Katsunori Murota |
| Anna Szczerba-Turek | Katsunori Okazaki |
| Anton E. Shikov | Kazutoyo Yoda |
| Anu Chacko | Ke Dong |
| Arakere Chunchegowda Udayashankar | Kelli L. Barr |
| Ashenafi F. Beyi | Kim Stanford |
| Ashutosh P. Dubey | Ki-Young Kim |
| Aurélien Deniaud | Kwang-sun Kim |
| Aurelio Ciancio | KY. Leung |
| Ayush Ranawade | Laura Rojas |
| Bimal Jana | Leopoldo Palma |
| Bruno P. Lima | Liang-Chun Wang |
| Cheng-Yen Kao | Linjun Yao |
| Chihyang Wang | Magdalena Polak-Berecka |
| Chih-Yao Hou | Makoto Nakakido |
| Christel Baum | Małgorzata Ziarno |
| Christina Behr | Manish Kumar |
| Cinzia Calvio | Manuel Montalban-Lopez |
| Claudia Coleine | Maria Filomena Caeiro |
| Claudia Pinacchio | Maria Maddalena Del Gallo Di Roccagiovine |
| Clayton C. Caswell | Marina Diioia |
| Corina Carranca | Marjorie Jones |
| Cynthia Blanton | Mark J. Lee |
| Dan-Bogdan Navolan | Mark Reglinski |
| Daniel Enosi Tuipulotu | Mark Willcox |
| David McVey | Marna E. Ericson |
| Davide Gori | Martina Bednářová |
| Déborah Tribouillard-Tanvier | Matt D. Johansen |
| Denisa Jucan | Mert Sudağıdan |
| Denise Schrama | Mikhail Dubinin |
| Diana Di Gioia | Mila A. Emerald |
| Dimitra Houhoula | Milos Jesenak |
| Dimitris Tsaltas | Miroslava Kačániová |
| Edyta Konecka | Mitsuo Sakamoto |
| Egle Kudirkiene | Mona I. Shaaban |
| Elena Sorrentino | Mya Myat Ngwe Tun |
| Eleni Aklillu | Naveen Kumar |
| Elpiniki Vandera | Nikos C. Kyrpides |
| Elzbieta Szacon | Octavio Dublan-García |
| Emiko Sato | Panagiotis Karanis |
| Eric Freed | Pavel Payne |
| Eric Yager | Piotr Perliński |
| Erick S. Lebrun | Poulami Sarkar |
| Eugenia Bezirtzoglou | Pranshu Sahgal |
| Eugenio Rastelli | Priscilla Maciel Quatrin |
| Fatma Berri | Raghavendra Yadavalli |
| Federica Alessandrini | Raimundo Jiménez Ballesta |
| Federica Di Profio | Ricardo Silvestre |
| Federico Rojas | Rita Polito |
| Félix Marcos Tejedor | Roberto Arrigoni |
| Fernando Leal | Rodolfo Parada |
| Filip Šenigl | Romeo T. Cristina |
| Florentina Matei | Rosario Gil |
| Franca Rossi | Ruiyong Zhang |
| Francesco Pomilio | Sandeep Kumar |
| Gaetan Ligat | Santiago Aubourg |
| Giovanni Antonini | Sara Billerbeck |
| Giuliana Lo Cascio | Sarah Aherfi |
| Gloria Marcela Rodriguez | Sebastian Piłsyk |
| Granger Sutton | Selma Snini |
| Grzegorz Woźniakowski | Serajus Salaheen |
| Gunjan Arora | Seung-Yoon Oh |
| Guy J. Smagghe | Shuqi Li |
| Hamed Bostan | Siddharth Jaggavarapu |
| Ibrahim Bitar | Simon Menanteau-Ledouble |
| Irit Davidson | Soo Je Park |
| Isabella Grishkan | Srikanth Manam |
| Iwona Markowska-Daniel | Stephen A. Jackson |
| Jacky Chow | Sulaiman Lakoh |
| Janis Müller | Swati Rawat |
| Jarosław Pasek | Tzu-Chuan Ho |
| Jenny Schelin | Vladislav Čurn |
| Jesús A. Santos | |
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