 The last ten cases have all been about contagious diseases which are easily passed from one person to another by the discharges from the nose and throat.  The Case-system of Hygiene - Side 61af Harry W. Haight - 1916Fuld visning - Om denne bog
 | Lee Kaufer Frankel, Donald Budd Armstrong, Genevieve May Fox - 1926 - 414 sider
...tell whether or not the diphtheria germs are present. Diphtheria is very contagious, being carried from one person to another by the discharges from the nose and throat of the patient. It has also been carried by milk. A person who has had diphtheria should never be allowed... | |
| |
