| MALARIA | Fish help curb this disease by eating mosquito larvae |
| SYPHILIS | What disease was called "the French disease" by the British and Germans, "the Neapolitan disease" by the French, "the Polish disease" by the Russians and "the German disease" by the Polish? (8) |
| HOMEOPATHY | Method of treating disease by the use of small amounts of a drug that, in healthy persons, produces symptoms similar to those of the disease being treated |
| IMMUNE | Protected against a specific disease by inoculation (6) |
| CONTAGION | Communication of disease by close contact |
| IMMUNITY | Resistance to disease by organisms (8) |
| ALS | Lou Gehrig's disease, by another name |
| DIAGNOSIS | Identification of disease by examination (9) |
| IRIDOLOGY | Diagnosis of disease by looking at part of the eye (9) |
| SMALLPOX | Calf eating pig's head gets this disease (8) |
| ACUPUNCTURE | Treatment of pain or disease by inserting the tips of needles at specific points in the skin (11) |
| DIAGNOSES | Doctors' opinions on early diseases by silver hooters? |
| SOHO | John Snow's study of an outbreak of cholera in this London West End area led to the discovery that water supplies were the means of spreading this disease |
| POLIO | The first vaccine for this disease, now mostly eradicated, was created by Jonas Salk |
| WHALES | What, in a claim by a Japanese government minister, deny starving people food by eating fish? (6) |
| LEPROSY | The French experts have final remedy for this disease (7) |
| STAGGERS | This disease of horses throws one off balance (8) |
| ERGOT | Thesaurus compiler confused this disease of grasses (5) |
| TYPHOID | Prince Albert died of this disease in 1861 |
| FOOTROT | First of Friesians run round rings: with this disease? |
