Microbiology & The Viral Realm: Key Innovations & Milestones
Encyclopedia/1. The Cosmos & The Natural World/5. Life Sciences • Curated by Admin Timeline.sg
This timeline traces the history of microbiology and virology, from ancient observations of disease to modern molecular biology, highlighting key discoveries such as the first microscopes, germ theory, identification of viruses, and the rise of antibiotic resistance.
Chronological Storyline (42 Milestones)
2500 BCE
Ancient Egyptian Beer and Bread Fermentation
Ancient Egyptians use yeast for brewing beer and baking bread, unknowingly harnessing microbial fermentation. #microbiology #history
Ancient Egyptian Beer and Bread Fermentation By Unknown author - NOAA ocean explorer, Public domain, https://commons.wikimedia.org/w/index.php?curid=87008
1500 BCE
Ebers Papyrus Describes Moldy Bread Remedy
The Ebers Papyrus from ancient Egypt records the use of moldy bread to treat wounds, an early example of antimicrobial therapy. #microbiology #medicine
Ebers Papyrus Describes Moldy Bread Remedy By PEbers_c41.jpg: Einsamer Schütze derivative work: Photohound (talk) - This file was derived from: PEbers c41.jpg:, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=18511551
400 BCE
Hippocrates Describes Contagion
Greek physician Hippocrates proposes that diseases are caused by environmental factors, not divine punishment, laying groundwork for germ theory. #microbiology #medicine
Hippocrates Describes Contagion By Unidentified engraver - 1881 Young Persons' Cyclopedia of Persons and Places Upload by RedWolf 05:45, Jan 10, 2005 (UTC), Public domain, https://commons.wikimedia.org/w/index.php?curid=164808
1025 CE
Ibn Sina's Canon of Medicine on Contagion
Persian polymath Ibn Sina (Avicenna) writes The Canon of Medicine, describing contagious diseases like tuberculosis and the spread through water and soil. #microbiology #medicine
Ibn Sina's Canon of Medicine on Contagion By Coffeetalkh - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=11906621
1546 CE
Fracastoro Proposes Germ Theory of Disease
Italian physician Girolamo Fracastoro suggests that diseases are caused by tiny, transferable 'seeds' (seminaria), an early germ theory. #microbiology #history
Fracastoro Proposes Germ Theory of Disease By Attributed to Titian - This file was derived from: Titian Girolamo Fracastoro.jpg:, Public domain, https://commons.wikimedia.org/w/index.php?curid=79211693
1665 CE
Robert Hooke Publishes Micrographia
Robert Hooke's Micrographia describes microscopic observations of cork cells, coining the term 'cell' and inspiring further microscopy. #microbiology #science
Robert Hooke Publishes Micrographia By Robert Hooke (1635-1703) - This image is available from the National Library of Wales, Public domain, https://commons.wikimedia.org/w/index.php?curid=7442137
1676 CE
Leeuwenhoek Observes Microorganisms
Antonie van Leeuwenhoek uses handmade microscopes to observe bacteria and protozoa, becoming the first to document microbes. #microbiology #history
Leeuwenhoek Observes Microorganisms By Jan Verkolje - http://www.rijksmuseum.nl/collectie/SK-A-957, Public domain, https://commons.wikimedia.org/w/index.php?curid=34320547
May 14, 1796 CE
Jenner Tests Smallpox Vaccine
Edward Jenner inoculates James Phipps with cowpox, demonstrating immunity to smallpox and founding vaccinology. #microbiology #vaccine
Jenner Tests Smallpox Vaccine By John Raphael Smith - [1] [2], originally uploaded to en by User:Magnus Manske, Public domain, https://commons.wikimedia.org/w/index.php?curid=31245
1835 CE
Bassi Shows Microorganism Causes Disease
Agostino Bassi demonstrates that a fungus causes silkworm disease, providing early evidence for germ theory. #microbiology #history
Bassi Shows Microorganism Causes Disease By Unknown author - [1], CC BY 4.0, https://commons.wikimedia.org/w/index.php?curid=32981604
1854 CE
Pasteur Develops Pasteurization
Louis Pasteur develops pasteurization to prevent wine spoilage, demonstrating that microbes cause fermentation and spoilage. #microbiology #science
Pasteur Develops Pasteurization By Chicago Department of Health artist - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1448139/, Public domain, https://commons.wikimedia.org/w/index.php?curid=71824380
1854 CE
Snow Traces Cholera to Contaminated Water
John Snow maps cholera cases in London, linking the outbreak to a contaminated water pump, pioneering epidemiology. #microbiology #medicine
Snow Traces Cholera to Contaminated Water By Unknown author - [1] Originally from en.wikipedia; description page is/was here., Public domain, https://commons.wikimedia.org/w/index.php?curid=403227
1861 CE
Pasteur Disproves Spontaneous Generation
Louis Pasteur's swan-neck flask experiments disprove spontaneous generation, proving that microbes come from other microbes. #microbiology #science
Pasteur Disproves Spontaneous Generation By Ian Alexander - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=120373498
1867 CE
Lister Introduces Antiseptic Surgery
Joseph Lister uses carbolic acid to sterilize surgical wounds, drastically reducing infections and advancing germ theory. #microbiology #medicine
Lister Introduces Antiseptic Surgery By Unknown author - Weltrundschau zu Reclams Universum 1902, Public domain, https://commons.wikimedia.org/w/index.php?curid=9647607
1876 CE
Koch Identifies Anthrax Bacillus
Robert Koch proves that Bacillus anthracis causes anthrax, establishing Koch's postulates for linking microbes to diseases. #microbiology #science
Koch Identifies Anthrax Bacillus By Unknown author - https://ihm.nlm.nih.gov/images/B16691, Public domain, https://commons.wikimedia.org/w/index.php?curid=1825905
1881 CE
Pasteur Develops Anthrax Vaccine
Louis Pasteur creates the first attenuated vaccine for anthrax, demonstrating successful immunization against a bacterial disease. #microbiology #vaccine
Pasteur Develops Anthrax Vaccine By Nhj78992 - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=32500182
Mar 24, 1882 CE
Koch Discovers Tuberculosis Bacillus
Robert Koch announces the discovery of Mycobacterium tuberculosis, the cause of tuberculosis, a major breakthrough in infectious disease. #microbiology #medicine
Koch Discovers Tuberculosis Bacillus By Photo Credit: Content Providers(s): CDC/Dr. George Kubica - This media comes from the Centers for Disease Control and Prevention's Public Health Image Library (PHIL), with identification number #4428. Note: Not all PHIL images are public domain; be sure to check copyright status and credit authors and content providers. العربية | Deutsch | English | македонски | slovenščina | +/−, Public domain, https://commons.wikimedia.org/w/index.php?curid=422340
1884 CE
Gram Develops Gram Staining
Hans Christian Gram develops the Gram stain technique, which differentiates bacteria into Gram-positive and Gram-negative, aiding classification. #microbiology #science
Gram Develops Gram Staining By Mikael Häggström, M.D. Author info - Reusing images- Conflicts of interest: None Mikael Häggström, M.D. - Own work, CC0, https://commons.wikimedia.org/w/index.php?curid=139041868
Jul 6, 1885 CE
Pasteur Tests Rabies Vaccine on Human
Louis Pasteur successfully treats Joseph Meister with a rabies vaccine, marking the first human vaccination against a viral disease. #microbiology #vaccine
Pasteur Tests Rabies Vaccine on Human By Whispyhistory - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=113048305
1892 CE
Ivanovsky Discovers Tobacco Mosaic Virus
Dmitri Ivanovsky shows that the causative agent of tobacco mosaic disease passes through filters that trap bacteria, discovering the first virus. #virology #science
Ivanovsky Discovers Tobacco Mosaic Virus By Unknown author - [1], Public domain, https://commons.wikimedia.org/w/index.php?curid=3430584
1894 CE
Kitasato and Yersin Discover Plague Bacillus
Shibasaburo Kitasato and Alexandre Yersin independently identify Yersinia pestis as the cause of bubonic plague. #microbiology #medicine
Kitasato and Yersin Discover Plague Bacillus By Unknown author, Public domain, https://commons.wikimedia.org/w/index.php?curid=2555007
1897 CE
Buchner Discovers Cell-Free Fermentation
Eduard Buchner demonstrates that yeast extract can ferment sugar without living cells, founding biochemistry of enzymes. #microbiology #science
Buchner Discovers Cell-Free Fermentation By Unknown author - http://www.nobelprize.org/nobel_prizes/chemistry/laureates/1907/buchner.html, Public domain, https://commons.wikimedia.org/w/index.php?curid=18253176
1901 CE
Reed Proves Yellow Fever Transmitted by Mosquitoes
Walter Reed's commission confirms that yellow fever is caused by a virus transmitted by mosquitoes, leading to control measures. #virology #medicine
Reed Proves Yellow Fever Transmitted by Mosquitoes By Unidentified photographer - en:Image:WalterReed.jpeg, Public domain, https://commons.wikimedia.org/w/index.php?curid=240486
1905 CE
Schaudinn and Hoffmann Discover Syphilis Spirochete
Fritz Schaudinn and Erich Hoffmann identify Treponema pallidum as the cause of syphilis. #microbiology #medicine
Schaudinn and Hoffmann Discover Syphilis Spirochete By Photo credit: Content providers(s): CDC / Dr. David Cox - This media comes from the Centers for Disease Control and Prevention's Public Health Image Library (PHIL), with identification number #1977. Note: Not all PHIL images are public domain; be sure to check copyright status and credit authors and content providers. العربية | Deutsch | English | македонски | slovenščina | +/− Originally from en.wikipedia.org; description page is/was here., Public domain, https://commons.wikimedia.org/w/index.php?curid=2256695
1910 CE
Ehrlich Develops First Chemotherapeutic Agent
Paul Ehrlich introduces Salvarsan for treating syphilis, the first synthetic drug targeting a microbe, pioneering chemotherapy. #microbiology #medicine
Ehrlich Develops First Chemotherapeutic Agent By Unknown author, Public domain, https://commons.wikimedia.org/w/index.php?curid=1054621
1915 CE
Twort and d'Herelle Discover Bacteriophages
Frederick Twort and Félix d'Herelle independently discover viruses that infect bacteria, later named bacteriophages. #virology #science
Twort and d'Herelle Discover Bacteriophages By Dr. Victor Padilla-Sanchez, PhD https://www.drvictorpadillasanchez.com - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=92020519
Sep 28, 1928 CE
Fleming Discovers Penicillin
Alexander Fleming observes that a mold (Penicillium) inhibits bacterial growth, leading to the discovery of penicillin. #microbiology #medicine
Fleming Discovers Penicillin By Yikrazuul - Own work, Public domain, https://commons.wikimedia.org/w/index.php?curid=7348509
1931 CE
Electron Microscope Invented
Ernst Ruska and Max Knoll build the first electron microscope, enabling visualization of viruses and subcellular structures. #microbiology #science
Electron Microscope Invented By Alice im Miniland - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=42485910
1935 CE
Stanley Crystallizes Tobacco Mosaic Virus
Wendell Stanley crystallizes the tobacco mosaic virus, showing that viruses are composed of protein and nucleic acid. #virology #science
Stanley Crystallizes Tobacco Mosaic Virus By Unknown author - http://www.nobelprize.org/nobel_prizes/chemistry/laureates/1946/stanley.html, Public domain, https://commons.wikimedia.org/w/index.php?curid=18260423
1941 CE
Florey and Chain Mass-Produce Penicillin
Howard Florey and Ernst Chain develop methods for large-scale production of penicillin, making it widely available. #microbiology #medicine
1944 CE
Avery Shows DNA is Genetic Material
Oswald Avery, Colin MacLeod, and Maclyn McCarty demonstrate that DNA carries genetic information in bacteria. #microbiology #genetics
Avery Shows DNA is Genetic Material By Bbkkk - self-made in the Naturkunste Museum in Berlin, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=3679283
1952 CE
Hershey-Chase Confirm DNA as Genetic Material
Alfred Hershey and Martha Chase use bacteriophages to confirm that DNA, not protein, is the genetic material. #virology #genetics
Hershey-Chase Confirm DNA as Genetic Material By Thomasione - Modified from German Wikipedia [1], GFDL, https://commons.wikimedia.org/w/index.php?curid=15034881
1953 CE
Watson and Crick Discover DNA Structure
James Watson and Francis Crick propose the double helix structure of DNA, revolutionizing molecular biology. #microbiology #genetics
Watson and Crick Discover DNA Structure By Zephyris - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=15027555
1955 CE
Salk Polio Vaccine Declared Safe and Effective
Jonas Salk's inactivated polio vaccine is announced successful, leading to widespread vaccination and decline of polio. #virology #vaccine
Salk Polio Vaccine Declared Safe and Effective By USAID - USAID Bangladesh, Public domain, https://commons.wikimedia.org/w/index.php?curid=1021
1961 CE
Jacob and Monod Propose Operon Model
François Jacob and Jacques Monod describe the lac operon, explaining gene regulation in bacteria. #microbiology #genetics
1977 CE
Woese Discovers Archaea
Carl Woese uses rRNA sequencing to identify Archaea as a distinct domain of life, reshaping the tree of life. #microbiology #evolution
Woese Discovers Archaea By Maulucioni - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=89047952
1983 CE
HIV Identified as Cause of AIDS
Luc Montagnier and Robert Gallo independently isolate the human immunodeficiency virus (HIV), leading to diagnostic tests. #virology #medicine
HIV Identified as Cause of AIDS By Photo Credit: C. Goldsmith Content Providers: CDC/ C. Goldsmith, P. Feorino, E. L. Palmer, W. R. McManus - This media comes from the Centers for Disease Control and Prevention's Public Health Image Library (PHIL), with identification number #10000. Note: Not all PHIL images are public domain; be sure to check copyright status and credit authors and content providers. العربية | Deutsch | English | македонски | slovenščina | +/−, Public domain, https://commons.wikimedia.org/w/index.php?curid=3909584
1995 CE
First Bacterial Genome Sequenced
The complete genome of Haemophilus influenzae is sequenced, the first free-living organism to have its genome decoded. #microbiology #genomics
First Bacterial Genome Sequenced By Stefan Walkowski - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=41492226
2003 CE
Human Genome Project Completed
The Human Genome Project finishes sequencing the human genome, enabling advances in microbiology and personalized medicine. #microbiology #genomics
Human Genome Project Completed By U.S. Department of Energy, Human Genome Project - http://www.ornl.gov/hgmis, Public domain, https://commons.wikimedia.org/w/index.php?curid=2485616
2005 CE
First Synthetic Virus Created
Scientists synthesize the poliovirus from scratch, demonstrating the ability to create artificial viruses. #virology #science
2010 CE
First Synthetic Bacterial Genome
J. Craig Venter Institute creates Mycoplasma mycoides JCVI-syn1.0, the first self-replicating bacterium with a synthetic genome. #microbiology #science
2013 CE
CRISPR-Cas9 Gene Editing Revolution
Emmanuelle Charpentier and Jennifer Doudna develop CRISPR-Cas9, a precise gene-editing tool derived from bacterial immune systems. #microbiology #genetics
CRISPR-Cas9 Gene Editing Revolution By Boghog - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=68597347
Jan 30, 2020 CE
WHO Declares COVID-19 a Public Health Emergency
The World Health Organization declares the COVID-19 outbreak a Public Health Emergency of International Concern, highlighting the global impact of a novel coronavirus. #virology #pandemic
WHO Declares COVID-19 a Public Health Emergency By Gustavo Basso - https://www.flickr.com/photos/gustavocb/49913440386, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=112916636
