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๐Ÿฆ  How social animals can spread diseases (์‚ฌํšŒ์  ๋™๋ฌผ๋“ค์ด ์งˆ๋ณ‘์„ ํผ๋œจ๋ฆฌ๋Š” ๋ฐฉ๋ฒ•)

2026.01.25 | ์กฐํšŒ 51 |
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ํ™˜๊ฒฝ๋ฑ…ํฌ ์˜ ํ”„๋กœํ•„ ์ด๋ฏธ์ง€

ํ™˜๊ฒฝ๋ฑ…ํฌ

๊ตฌ๋…ํ•˜์‹œ๋ฉด 2์ฃผ์— ํ•œ ๋ฒˆ์”ฉ ์žฌ๋ฏธ์žˆ๋Š” ํ™˜๊ฒฝ ๋‰ด์Šค๋ฅผ ๋งŒ๋‚˜๋ณผ ์ˆ˜ ์žˆ์„์ง€๋„? ๊ณ ๋“ฑํ•™์ƒ์˜ ์‹œ์„ ์—์„œ ๋ฐ”๋ผ๋ณธ ํ™˜๊ฒฝ ๋‰ด์Šค๋“ค์„ ๋ชจ์กฐ๋ฆฌ ์ „ํ•ด๋“œ๋ฆฝ๋‹ˆ๋‹ค.

Hello, ladies and gentlemen. I'm the "Environmental Bank" with all the worldwide environmental issues. Today, weโ€™ll take a closer look at the topic "How social animals can spread diseases". 

์•ˆ๋…•ํ•˜์„ธ์š”. ํ™˜๊ฒฝ ๊ด€๋ จ ์ด์Šˆ๋“ค์„ ๋ชจ๋‘ ๋ณด์œ ํ•˜๊ณ  ์žˆ๋Š” "ํ™˜๊ฒฝ๋ฑ…ํฌ"์ž…๋‹ˆ๋‹ค. ์˜ค๋Š˜์€ "์‚ฌํšŒ์  ๋™๋ฌผ๋“ค์ด ์งˆ๋ณ‘์„ ํผ๋œจ๋ฆฌ๋Š” ๋ฐฉ๋ฒ•"์— ๋Œ€ํ•œ ์ฃผ์ œ์— ๋Œ€ํ•ด์„œ ์ž์„ธํžˆ ์•Œ์•„๋ด…์‹œ๋‹ค.

 

์ฒจ๋ถ€ ์ด๋ฏธ์ง€

What is the issue? 

Whales, dolphins, seals, and other marine mammals are highly social animals.However, this strong sociality can also become a pathway for infectious diseases to spread rapidly through populations.

At a time when these animals are already under stress from climate change, marine pollution, and human activities, disease poses a particularly serious and even fatal threat to endangered species.

 

๋ฌธ์ œ๋Š” ๋ฌด์—‡์ธ๊ฐ€์š”? 

๊ณ ๋ž˜, ๋Œ๊ณ ๋ž˜, ๋ฌผ๊ฐœ ๊ฐ™์€ ํ•ด์–‘ ํฌ์œ ๋ฅ˜๋Š” ๋งค์šฐ ์‚ฌํšŒ์ ์ธ ๋™๋ฌผ์ž…๋‹ˆ๋‹ค. ํ•˜์ง€๋งŒ ์ด ๊ฐ•ํ•œ ์‚ฌํšŒ์„ฑ์ด ์˜คํžˆ๋ ค ์ „์—ผ๋ณ‘์ด ๋น ๋ฅด๊ฒŒ ํผ์งˆ ์ˆ˜ ์žˆ๋Š” ํ†ต๋กœ๊ฐ€ ๋˜๊ณ  ์žˆ์Šต๋‹ˆ๋‹ค.

ํŠนํžˆ ๊ธฐํ›„ ๋ณ€ํ™”, ํ•ด์–‘ ์˜ค์—ผ, ์ธ๊ฐ„ ํ™œ๋™์œผ๋กœ ์ด๋ฏธ ์ŠคํŠธ๋ ˆ์Šค๋ฅผ ๋ฐ›๊ณ  ์žˆ๋Š” ์ƒํ™ฉ์—์„œ ์งˆ๋ณ‘์€ ๋ฉธ์ข… ์œ„๊ธฐ ์ข…์—๊ฒŒ ์น˜๋ช…์ ์ธ ์œ„ํ˜‘์ด ๋ฉ๋‹ˆ๋‹ค.

 

Why is disease a serious threat to marine mammals?

Disease is one of the leading causes of death in marine vertebrates, alongside major pressures such as:

  • Fisheries interactions
  • Pollution
  • Habitat degradation
  • Climate change

These environmental stressors weaken immune systems, making marine mammals more vulnerable to infection and less able to recover once disease spreads.

 

์งˆ๋ณ‘์ด ์™œ ์ด๋ ‡๊ฒŒ ์œ„ํ—˜ํ•œ๊ฐ€์š”?

์งˆ๋ณ‘์€ ํ•ด์–‘ ์ฒ™์ถ”๋™๋ฌผ ์‚ฌ๋ง ์›์ธ ์ค‘ ํ•˜๋‚˜๋กœ,

  • ์–ด์—… ํ™œ๋™
  • ์˜ค์—ผ
  • ์„œ์‹์ง€ ํŒŒ๊ดด
  • ๊ธฐํ›„๋ณ€ํ™” ์™€ ํ•จ๊ป˜ ๊ฐ€์žฅ ํฐ ์œ„ํ˜‘ ์š”์ธ์œผ๋กœ ๊ผฝํž™๋‹ˆ๋‹ค.

์ด๋Ÿฐ ํ™˜๊ฒฝ์  ์ŠคํŠธ๋ ˆ์Šค๋Š” ์ƒ๋ฌผ๋“ค์˜ ๋ฉด์—ญ ์ฒด๊ณ„๋ฅผ ์•ฝํ™”์‹œ์ผœ ๊ฐ์—ผ์— ๋” ์‰ฝ๊ฒŒ ๋…ธ์ถœ๋˜๊ฒŒ ๋งŒ๋“ญ๋‹ˆ๋‹ค.

 

How do marine mammals spread diseases?

According to research, diseases in marine mammals can be transmitted through several pathways, including:

  • Direct physical contact
  • Airborne or respiratory transmission
  • Bites or open wounds
  • Sexual contact

A wide range of pathogens are involved, including viruses, bacteria, fungi, and protozoa. Documented diseases include morbillivirus, influenza, brucellosis, and others.

 

ํ•ด๋‹น ํฌ์œ ๋ฅ˜๋Š” ์–ด๋–ป๊ฒŒ ์งˆ๋ณ‘์„ ํผ๋œจ๋ฆฌ๋‚˜์š”? 

์—ฐ๊ตฌ์— ๋”ฐ๋ฅด๋ฉด ํ•ด์–‘ ํฌ์œ ๋ฅ˜์˜ ์งˆ๋ณ‘์€ ๋‹ค์Œ๊ณผ ๊ฐ™์€ ๋ฐฉ์‹์œผ๋กœ ์ „ํŒŒ๋ฉ๋‹ˆ๋‹ค:

  • ์ง์ ‘์ ์ธ ์ ‘์ด‰
  • ํ˜ธํก๊ธฐ, ๊ณต๊ธฐ๋ฅผ ํ†ตํ•œ ์ „ํŒŒ
  • ๋ฌผ๋ฆผ์ด๋‚˜ ์ƒ์ฒ˜
  • ์„ฑ์  ์ ‘์ด‰

๋ฐ”์ด๋Ÿฌ์Šค, ๋ฐ•ํ…Œ๋ฆฌ์•„, ๊ณฐํŒก์ด, ์›์ƒ๋™๋ฌผ ๋“ฑ ๋‹ค์–‘ํ•œ ๋ณ‘์›์ฒด๊ฐ€ ํฌํ•จ๋˜๋ฉฐ๋ชจ๋นŒ๋ฆฌ๋ฐ”์ด๋Ÿฌ์Šค, ์ธํ”Œ๋ฃจ์—”์ž, ๋ธŒ๋ฃจ์…€๋ผ์ฆ ๋“ฑ๋„ ํ™•์ธ๋˜์—ˆ์Šต๋‹ˆ๋‹ค.

 

What role does social behavior play?

Like humans, marine mammals form complex social networks.The problem is that diseases can travel through these networks just as easily as social interactions do.

Researchers found that the risk of disease transmission varies greatly depending on:

  • whether social relationships are stable or long-term,
  • how fluid or dynamic group structures are, and
  • how frequently individuals interact with other groups or species.

 

์‚ฌํšŒ์  ํ–‰๋™์€ ์–ด๋–ค ์—ญํ• ์„ ํ•˜๋‚˜์š”?

ํ•ด์–‘ ํฌ์œ ๋ฅ˜๋„ ์ธ๊ฐ„์ฒ˜๋Ÿผ ์‚ฌํšŒ์  ๋„คํŠธ์›Œํฌ๋ฅผ ๊ฐ€์ง€๊ณ  ์žˆ์Šต๋‹ˆ๋‹ค.๋ฌธ์ œ๋Š” ์ด ๋„คํŠธ์›Œํฌ๋ฅผ ํ†ตํ•ด ์งˆ๋ณ‘๋„ ํ•จ๊ป˜ ์ด๋™ํ•œ๋‹ค๋Š” ์ ์ž…๋‹ˆ๋‹ค.

์—ฐ๊ตฌ์ง„์€ ์ข…๋งˆ๋‹ค

  • ๊ด€๊ณ„๊ฐ€ ๊ณ ์ •์ ์ธ์ง€
  • ์œ ๋™์ ์ธ์ง€

๋‹ค๋ฅธ ์ข…๊ณผ ์–ผ๋งˆ๋‚˜ ์ž์ฃผ ์„ž์ด๋Š”์ง€ ์— ๋”ฐ๋ผ ์งˆ๋ณ‘ ํ™•์‚ฐ ์œ„ํ—˜์ด ํฌ๊ฒŒ ๋‹ฌ๋ผ์ง„๋‹ค๋Š” ์ ์„ ๋ฐํ˜”์Šต๋‹ˆ๋‹ค.

 

Who are the โ€œsuper-spreadersโ€?

Individuals with many social connections, those that interact frequently with multiple groups, can act as โ€œsuper-spreaders.โ€

For example, in dolphin communities, individuals with stronger or more frequent social bonds were more likely to be associated with disease. In some cases, just one highly connected individual can trigger rapid spread across an entire population.

 

โ€˜์Šˆํผ ์ „ํŒŒ์žโ€™๋Š” ๋ˆ„๊ตฌ์ธ๊ฐ€์š”?

์‚ฌํšŒ์  ์—ฐ๊ฒฐ์ด ๋งŽ์€ ๊ฐœ์ฒด, ์ฆ‰ ์—ฌ๋Ÿฌ ๋ฌด๋ฆฌ์™€ ์ž์ฃผ ์ƒํ˜ธ์ž‘์šฉํ•˜๋Š” ๊ฐœ์ฒด๋Š” โ€˜์Šˆํผ ์ „ํŒŒ์ž(super-spreader)โ€™ ์—ญํ• ์„ ํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.

์˜ˆ๋ฅผ ๋“ค์–ด,

๋Œ๊ณ ๋ž˜ ๋ฌด๋ฆฌ์—์„œ๋Š” ์‚ฌํšŒ์  ์œ ๋Œ€๊ฐ€ ๊ฐ•ํ•œ ๊ฐœ์ฒด์ผ์ˆ˜๋ก ์งˆ๋ณ‘๊ณผ ์—ฐ๊ด€๋  ๊ฐ€๋Šฅ์„ฑ์ด ๋” ๋†’์•˜์Šต๋‹ˆ๋‹ค.

๋˜, ์ด๋Ÿฐ ๊ฐœ์ฒด ํ•œ ๋งˆ๋ฆฌ๋กœ๋„ ๊ฐ์—ผ์ด ์ˆœ์‹๊ฐ„์— ํผ์งˆ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.

 

Why is this hard to manage in the ocean?

Unlike on land, the ocean makes disease management extremely challenging:

  • Not all interactions can be observed
  • Sick individuals cannot easily be isolated
  • Early intervention is often impossible

As a result, once disease becomes widespread, treatment options are very limited. This makes prevention far more important than cure.

 

์™œ ๋ฐ”๋‹ค์—์„œ๋Š” ๊ด€๋ฆฌ๊ฐ€ ๋” ์–ด๋ ค์šธ๊นŒ์š”?

์œก์ƒ ๋™๋ฌผ๊ณผ ๋‹ฌ๋ฆฌ ๋ฐ”๋‹ค์—์„œ๋Š”

  • ๋ชจ๋“  ์ ‘์ด‰์„ ๊ด€์ฐฐํ•˜๊ธฐ ์–ด๋ ต๊ณ 
  • ์•„ํ”ˆ ๊ฐœ์ฒด๋ฅผ ๊ฒฉ๋ฆฌํ•˜๊ธฐ๋„ ๊ฑฐ์˜ ๋ถˆ๊ฐ€๋Šฅํ•˜๋ฉฐ
  • ์งˆ๋ณ‘ ์ดˆ๊ธฐ ๊ฐœ์ž…์ด ๋งค์šฐ ์–ด๋ ต์Šต๋‹ˆ๋‹ค.

์ฆ‰, ์งˆ๋ณ‘์ด ํผ์ง„ ๋’ค์—๋Š” ์น˜๋ฃŒ๋ณด๋‹ค ์˜ˆ๋ฐฉ์ด ํ›จ์”ฌ ์ค‘์š”ํ•ฉ๋‹ˆ๋‹ค.

 

What can scientists do moving forward?

Researchers emphasize several key strategies:

  • Closely monitoring socially central individuals
  • Protecting habitats that support stable social structures
  • Prioritizing early detection and prevention-focused management

By understanding social relationships within marine mammal populations, scientists can better predict disease risks before outbreaks occur.

 

์•ž์œผ๋กœ ์šฐ๋ฆฌ๋Š” ๋ฌด์—‡์„ ํ•  ์ˆ˜ ์žˆ์„๊นŒ์š”?

์—ฐ๊ตฌ์ง„์€ ๋‹ค์Œ์„ ๊ฐ•์กฐํ•ฉ๋‹ˆ๋‹ค:

  • ์‚ฌํšŒ์ ์œผ๋กœ ์ค‘์‹ฌ์— ์žˆ๋Š” ๊ฐœ์ฒด๋ฅผ ์ง‘์ค‘ ๋ชจ๋‹ˆํ„ฐ๋ง
  • ์•ˆ์ •์ ์ธ ์‚ฌํšŒ ๊ตฌ์กฐ๋ฅผ ์œ ์ง€ํ•  ์ˆ˜ ์žˆ๋Š” ์„œ์‹์ง€ ๋ณดํ˜ธ
  • ์กฐ๊ธฐ ํƒ์ง€์™€ ์˜ˆ๋ฐฉ ์ค‘์‹ฌ ๊ด€๋ฆฌ

์‚ฌํšŒ์  ๊ด€๊ณ„๋ฅผ ์ดํ•ดํ•˜๋ฉด ์งˆ๋ณ‘์ด ํผ์ง€๊ธฐ ์ด์ „ ๋‹จ๊ณ„์—์„œ ์œ„ํ—˜์„ ์˜ˆ์ธกํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.

 

Wrap up

Right after I saw the title, I could just expect the "mechanism" of how social animals spread the disease: as they always stay close to each other, they would spread the disease through โ€œphysical contactโ€. So, most of the parts were pretty understandable to me, as the contents most likely were aligned to what I initially expected. However, for โ€œWhat can scientists do moving forward?โ€ part, I thought that monitoring all social animals is realistically impossible. So, I came up with another idea that might be helpful for preventing diseases over species: environmental surveillance. Through environmental surveillance, we can track pathogens by analyzing environmental DNA (eDNA) in seawater. 

 

๋งˆ๋ฌด๋ฆฌ

์ œ๋ชฉ์„ ๋ณด์ž๋งˆ์ž ์‚ฌํšŒ์  ๋™๋ฌผ๋“ค์ด ์–ด๋–ป๊ฒŒ ์งˆ๋ณ‘์„ ํผ๋œจ๋ฆฌ๋Š”์ง€์— ๋Œ€ํ•œ โ€˜๋ฉ”์ปค๋‹ˆ์ฆ˜โ€™์„ ์–ด๋А ์ •๋„ ์˜ˆ์ƒํ•  ์ˆ˜ ์žˆ์—ˆ๋‹ค. ์„œ๋กœ ๊ฐ€๊นŒ์ด ์ง€๋‚ด๋Š” ์‹œ๊ฐ„์ด ๋งŽ๊ธฐ ๋•Œ๋ฌธ์—, ์ฃผ๋กœ ์‹ ์ฒด์  ์ ‘์ด‰์„ ํ†ตํ•ด ์งˆ๋ณ‘์ด ํ™•์‚ฐ๋  ๊ฒƒ์ด๋ผ๊ณ  ์ƒ๊ฐํ–ˆ๊ธฐ ๋•Œ๋ฌธ์ด๋‹ค. ์‹ค์ œ๋กœ ๊ธ€์˜ ๋‚ด์šฉ ๋Œ€๋ถ€๋ถ„์€ ๋‚ด๊ฐ€ ์˜ˆ์ƒํ•œ ๋‚ด์šฉ๋“ค๊ณผ ํฌ๊ฒŒ ๋‹ค๋ฅด์ง€ ์•Š์•„ ๋น„๊ต์  ์ดํ•ดํ•˜๊ธฐ ์‰ฌ์› ๋‹ค.

ํ•˜์ง€๋งŒ โ€˜์•ž์œผ๋กœ ๊ณผํ•™์ž๋“ค์€ ๋ฌด์—‡์„ ํ•  ์ˆ˜ ์žˆ์„๊นŒ?โ€™๋ผ๋Š” ๋ถ€๋ถ„์— ์ด๋ฅด๋Ÿฌ์„œ๋Š”, ๋ชจ๋“  ์‚ฌํšŒ์  ๋™๋ฌผ์„ ๋ชจ๋‹ˆํ„ฐ๋งํ•˜๋Š” ๊ฒƒ์ด ํ˜„์‹ค์ ์œผ๋กœ ๊ฐ€๋Šฅํ• ์ง€์— ๋Œ€ํ•ด ์˜๋ฌธ์ด ๋“ค์—ˆ๋‹ค. ์ด์— ๋”ฐ๋ผ ๋‚˜๋Š” ์ข…์„ ๋„˜๋‚˜๋“œ๋Š” ์งˆ๋ณ‘ ํ™•์‚ฐ์„ ์˜ˆ๋ฐฉํ•˜๋Š” ๋ฐ ๋„์›€์ด ๋  ์ˆ˜ ์žˆ๋Š” ๋˜ ๋‹ค๋ฅธ ๋Œ€์•ˆ์œผ๋กœ โ€œํ™˜๊ฒฝ ๊ธฐ๋ฐ˜ ๊ฐ์‹œ(environmental surveillance)โ€๋ฅผ ๋– ์˜ฌ๋ฆฌ๊ฒŒ ๋˜์—ˆ๋‹ค. ํ™˜๊ฒฝ ๊ธฐ๋ฐ˜ ๊ฐ์‹œ๋ฅผ ํ†ตํ•ด ๋ฐ”๋‹ท๋ฌผ ์† ํ™˜๊ฒฝ DNA(eDNA)๋ฅผ ๋ถ„์„ํ•˜๋ฉด, ๊ฐœ์ฒด๋ฅผ ์ง์ ‘ ์ถ”์ ํ•˜์ง€ ์•Š๊ณ ๋„ ๋ณ‘์›์ฒด์˜ ์กด์žฌ๋ฅผ ํŒŒ์•…ํ•  ์ˆ˜ ์žˆ๋‹ค.

 

*๋ณธ ๋‰ด์Šค๋ ˆํ„ฐ์— ๋Œ€ํ•œ ์งˆ๋ฌธ๊ณผ ํ”ผ๋“œ๋ฐฑ์€ ํ™˜์˜์ž…๋‹ˆ๋‹ค.*

๋‹ค๊ฐ€์˜ฌ ๋‰ด์Šค๋ ˆํ„ฐ๊ฐ€ ๊ถ๊ธˆํ•˜์‹ ๊ฐ€์š”?

์ง€๊ธˆ ๊ตฌ๋…ํ•ด์„œ ์ƒˆ๋กœ์šด ๋ ˆํ„ฐ๋ฅผ ๋ฐ›์•„๋ณด์„ธ์š”

โœ‰๏ธ

์ด๋ฒˆ ๋‰ด์Šค๋ ˆํ„ฐ ์–ด๋– ์…จ๋‚˜์š”?

ํ™˜๊ฒฝ๋ฑ…ํฌ ๋‹˜์—๊ฒŒ โ˜•๏ธ ์ปคํ”ผ์™€ โœ‰๏ธ ์ชฝ์ง€๋ฅผ ๋ณด๋‚ด๋ณด์„ธ์š”!

๋Œ“๊ธ€

์˜๊ฒฌ์„ ๋‚จ๊ฒจ์ฃผ์„ธ์š”

ํ™•์ธ
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