 
 <prompt> text: ```For inside di plenty plenty kain microorganisms wey dey, e no plenty wey dey cause sickness for people wey dey healthy. Sickness wey dey come from infection na because of how those few pathogens dey interact with the body wey dem infect. How the sickness go show and how serious e go be, depend on how the pathogen fit damage the body and how the body fit resist the pathogen. But sometimes, the body immune system fit even cause damage to the body as e dey try to control the infection. Doctors dey classify infectious microorganisms or microbes based on how the body defense dey - either as primary pathogens or as opportunistic pathogens:

One way to show say one particular sickness na "infectious", na to satisfy Koch's postulates (wey Robert Koch first suggest), wey talk say the infectious agent must only dey inside patients and no dey inside healthy people, and say people wey catch the agent go also get the sickness. Dem first use these postulates to find out say Mycobacteria species dey cause tuberculosis. But e no dey ethical to use Koch's postulates for many human sickness because e go need to infect healthy person with pathogen wey dem produce as pure culture. Sometimes, even if sickness dey clearly infectious, e no go meet the infectious criteria. For example, Treponema pallidum, wey dey cause syphilis, no fit dey cultured in vitro - but the organism fit dey cultured for rabbit testes. E no dey clear if pure culture wey come from animal wey dey host dey better than the one wey come from microbes wey dey plate culture. Epidemiology na another important tool wey dem dey use to study sickness for population. For infectious diseases, e dey help to know if sickness outbreak na sporadic (wey dey happen occasionally), endemic (wey dey happen regularly for one area), epidemic (wey get plenty cases for one area), or pandemic (wey dey happen globally).

Answer these questions:

1. Wetin dem dey use to study sickness among certain groups?
2. Wetin dem dey use am for?
3. Wetin be one way to show say sickness fit spread reach other people?
4. How many microorganisms dey cause sickness?
5. Wetin dem group the infectious ones as?
6. Why Koch's proposal no fit dey used morally?
7. Wetin dey good to explore during sickness outbreak?
8. Who else fit the body immune system cause harm to?
9. Wetin dey cause tuberculosis?
10. Wetin no fit dey cultured in vitro?

Numbered answers:``` <response>: ```1. Epidemiology
2. to study disease for inside population
3. to satisfy Koch's postulates
4. e no plenty
5. as main sickness or as sickness wey fit show face anytime
6. e go need make person wey dey healthy catch the sickness experimentally
7. to know if disease outbreak na once in a while thing
8. to the person wey get the sickness
9. Mycobacteria species
10. syphilis``` 