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What Bacteria can teach us about going viral?

Written by Bach Nguyen

Harvard Undergraduate Microbiology Society · 2026-06-17 22:01 · 0 claps · 2.3 min read
#science #biology #microbiology #bacteria #biofilm
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Wiki topics: MIC · Microbiology & Immunology BIO · Biology · General 🔬 · Science · General 🎬 · Film & Television 📺 · Media · General

What Bacteria can teach us about going viral?

Written by Bach Nguyen

Are you trying to get viral on Instagram, Tiktok, Snapchat or even on Linkedin? Have you ever pondered endlessly about getting viral, but had nobody to rely on, get help and inspiration from? Well you are in luck, because your inspiration is in you. While mindset and creativity are vital, the real blueprint for virality is the bacteria inside of you.

Bacterial biofilms act as a highly coordinated social network where communication, specialization, and cooperation help make a system that mirrors and even surpasses human viral networks. These microscopic bacteria have spent billions of years perfecting the craft of spreading, adapting, and scaling long before the first hashtag was introduced. In some aspects, the bacterial network is a mirror to ours considering its cooperation, competition, and the constant race to adapt (Costerton et al., 1999; Donlan, 2002).

Rather than randomly clustering together, these organisms communicate through a process called quorum sensing, where bacteria release and detect chemical signals to measure how many other bacteria are nearby. Once enough cells are present, then the bacteria changes their behavior by turning on genes that regulate toxin production, biofilm formation or movement.

This process creates a “division of labor” where different groups of bacteria take on specialized roles, such as producing protective substances, while others focus on growth and nutrients. This coordination enables the biofilm to work as a coordinated multicellular organism, or in this case, a coordinate brand manager rather than isolated cells or workers.

Also the extracellular volumetric substance matrix gives physical protection against microbial agents, immune responses,and environmental disruptions (Miller and Bassler, 2001).

In addition to cooperating with each other, bacteria can communicate rapidly within their communities through horizontal gene transfer, a process where genetic material is exchanged directly between neighboring cells. The rapid sharing of bacterial genetic information acts like a viral trend in a scrolling algorithm where beneficial traits like antibiotic resistance sweep through the population in record time.

Another strategy present in biofilms is the formation of persister cells which are dormant variants that shut down metabolic activity for a certain period of time. Because many antibiotics target active cellular processes, these inactive cells can survive treatment and then later repopulate the biofilm once conditions have improved. This strategy can be seen as an example of collective resilience where the survival of a few ensures that the rest of the community is kept intact.

In the end, both the social and the bacterial systems show the same principle: cooperation and communication can amplify influence way beyond what individual bacteria or people can achieve by themselves. Because ultimately survival and influences are derived from organized systems of communication and specialization rather than just individual bacteria itself.

While human social networks aim to “go viral”, bacterial communities have already mastered this process in a microscopic lens — spreading, adapting, and persisting with remarkable efficiency. Once we understand these microbial systems from a molecular and broader world view, not only do we gain insight in fighting infections, but we can also look back to uncover how collective behavior can have a larger impact far beyond what a single individual can accomplish.

References:

  1. Costerton, J. W., Stewart, P. S., & Greenberg, E. P. (1999). Bacterial biofilms: A common cause of persistent infections. Clinical Microbiology Reviews, 12(2), 285–310. https://doi.org/10.1128/CMR.12.2.285
  2. Donlan, R. M. (2002). Biofilms: Microbial life on surfaces. Emerging Infectious Diseases, 8(9), 881–890. https://doi.org/10.3201/eid0809.020063
  3. Miller, M. B., & Bassler, B. L. (2001). Quorum sensing in bacteria. Annual Review of Microbiology, 55, 165–199. https://doi.org/10.1146/annurev.micro.55.1.165
  4. Soucy, S. M., Huang, J., & Gogarten, J. P. (2015). Horizontal gene transfer: Building the web of life. Nature Reviews Genetics, 16(8), 472–482. https://doi.org/10.1038/nrg3962

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