| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | rickettsia | Tropical countries | Less commonly known due to lower prevalence of tick-borne diseases in tropical regions | 1 |
| 2 | rickettsia | Tropical countries | Rickettsia may be less well-known compared to other infectious diseases and may not be a commonly discussed topic in everyday conversations. | 1 |
| 3 | rickettsia | Tropical countries | Rickettsia is commonly associated with diseases transmitted by lice and fleas, such as epidemic typhus and trench fever. | 1 |
| 4 | typhus | tropical countries | Typhus can be more prevalent in tropical countries due to the presence of certain types of insects, such as lice, that can transmit the disease. | 1 |