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Diseases: Virus... or Bacteria?

For each disease, try to guess whether it is caused by a virus or bacteria.
Quiz by interopia
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Featured Quiz
Last updated: October 19, 2021
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More quiz info >>
First submittedApril 16, 2019
Times taken33,043
Average score72.2%
Rating4.55
Quiz and answer stats >>
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1. Common cold
Virus ✓
Bacteria ✓
2. Influenza
Virus ✓
Bacteria ✓
3. Bubonic plague
Virus ✓
Bacteria ✓
Caused by the bacterium Yersinia pestis.
4. Covid-19
Virus ✓
Bacteria ✓
5. Cholera
Virus ✓
Bacteria ✓
It is an infection of the small intestine by the bacterium Vibrio cholerae.
6. Tetanus (lockjaw)
Virus ✓
Bacteria ✓
It is caused by the bacterium Clostridium tetani.
7. Measles
Virus ✓
Bacteria ✓
8. Rabies
Virus ✓
Bacteria ✓
9. Chlamydia
Virus ✓
Bacteria ✓
Caused by the bacterium Chlamydia trachomatis
10. Herpes
Virus ✓
Bacteria ✓
11. Ebola
Virus ✓
Bacteria ✓
12. Legionnaire's disease
Virus ✓
Bacteria ✓
Caused by any type of Legionella bacteria
13. Leprosy
Virus ✓
Bacteria ✓
Long-term infection by the bacteria Mycobacterium leprae or Mycobacterium lepromatosis
14. Lyme disease
Virus ✓
Bacteria ✓
It is caused by the bacteria Borrelia and spread by ticks
15. Smallpox
Virus ✓
Bacteria ✓
It was caused by Variola major and minor viruses.
16. Syphilis
Virus ✓
Bacteria ✓
It is caused by the bacterium Treponema pallidum.
17. Tuberculosis
Virus ✓
Bacteria ✓
It is caused by Mycobacterium tuberculosis bacteria.
18. Anthrax
Virus ✓
Bacteria ✓
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38 Comments
interopia
+1
Level 85
Oct 7, 2021
Thanks for playing! Also try Diseases: Contagious... or Not?
skukka
+5
Level 59
Apr 16, 2019
Fantantastic quiz!
interopia
+28
Level 85
Apr 17, 2019
So fantantastic it gets an extra syllallable?!
Azerk
+4
Level 65
Sep 28, 2022
That's quite the compliment then!
JackintheBox
+4
Level 80
Oct 19, 2021
Brilliliant quiz.
stillNogame
+5
Level 34
Sep 10, 2019
awesome quiz, I have learned something new
MaxStickies
+3
Level 79
Jul 14, 2020
Great quiz. Another interesting one to add could be toxoplasmosis.
interopia
+2
Level 85
Jul 15, 2020
Good call. Maybe in the update!
Tw0905
+2
Level 23
Oct 19, 2021
Toxoplasmosis is not bacteria or a virus, it's a parasite
interopia
+5
Level 85
Oct 19, 2021
Before the quiz was featured, the options were: virus, bacteria, both, neither. That's why MaxStickies suggested toxoplasmosis. :)
bigbywolf
+1
Level 54
Oct 19, 2021
All viruses and pathogenic bacteria are parasites. The organism that causes toxoplasmosis is an eukaryote and therefore no virus/bacterium. If your immune system is compromised (e.g. AIDS), it eats your brain. Scary stuff.
Dimby
+2
Level 79
Oct 19, 2021
Viruses are not parasites because they are not living organisms.
bigbywolf
+1
Level 54
Oct 20, 2021
It is not that simple. There seems to be no scientific consensus whether viruses are living organisms or not.
vermiciousknid
+1
Level 89
Sep 28, 2022
I'm happy that this got featured, but I thought the previously extant additional answer options added a lot. Still a great quiz though!
Hibasi
+1
Level 68
Dec 12, 2020
You might wanna correct HIV virus to HI-Virus otherwise its Hi-Virus Virus
TWM03
+3
Level 70
Sep 27, 2021
That would defeat the point of the quiz.
Dml123
+1
Level 70
Sep 26, 2021
Fairly straightforward for an infectious diseases physician!
Tastymeatpie
+6
Level 84
Sep 26, 2021
Love how Covid has 100% - everyone's been paying attention
comjag
+1
Level 89
Sep 26, 2021
We don't want to die from the virus.
semisnotcolon
+2
Level 41
Sep 27, 2021
It’s not like it’s a type of Coronavirus and sometimes called coronavirus
thisisAB
+2
Level 57
Sep 27, 2021
If anything, at least we all learned something during this pandemic... COVID-19 is a virus
Korlex
+8
Level 63
Oct 19, 2021
It isn't though... COVID-19 is the name of the disease; the virus is called SARS-CoV-2.

Just a nitpick ;]

mf3
+2
Level 88
Oct 6, 2021
RIght. If it were a bacterium, it would be called Cobad-19.
MallardQuack
+1
Level 53
Sep 27, 2021
I guessed almost all of them and was scared to see the results but got 19/20.
WillemLAif
+2
Level 76
Oct 8, 2021
We're always scared before the results. And being called by name and reason, loudly in front of an audience.
AlexThirkell
+7
Level 75
Sep 27, 2021
Cool quiz! Sadly I didn't get herpes.
Hezzer619
+14
Level 53
Sep 27, 2021
This comment sounds quite strange without context.
moonshot
+1
Level 56
Oct 19, 2021
This reminds of when covid started...

anyways,,,good quiz!

Marvo7
+2
Level 62
Oct 19, 2021
Bacteria is plural. BACTERIUM is singular. A bacterium. That's no tiny mistake.
interopia
+3
Level 85
Oct 19, 2021
Thanks, Marvo!
Trolololz
+1
Level 77
Oct 19, 2021
I give up, what is COVID-19?
Jacktheguy
+1
Level 91
Sep 28, 2022
Obviously it's a hoax created by the Democrats.
TheForsakenFurby
+1
Level 75
Oct 19, 2021
This is false because all of these diseases are actually caused by the global elite with time machines (the shadow masters...)
Krane
+1
Level 49
Oct 19, 2021
Hm, I put bacteria for Bubonic Plague, but for some reason says I put virus. probably some glitch or something wrong with the question
5708skier
+1
Level 50
Oct 20, 2021
As a rule of thumb if it has a vaccine it's a virus and if it doesn't it's bacterial.
interopia
+3
Level 85
Oct 20, 2021
There are vaccines for some bacteria. Check out Recommended Childhood Vaccines for Americans.
kalbahamut
+1
Level 81
Sep 28, 2022
and if you take antibiotics for it it's usually not a virus, either.
Etanna
+1
Level 71
Dec 15, 2024
lmao I realized that I have no idea when it comes to this. The only ones I was sure about were the flu, Covid and Chlamydia lol
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