The Influenza of 1679.

For the sake of comparison, I pass at once to an epidemic of coughs and colds in the month of November, 1679, which Sydenham has chronicled, but no one except Cullen[589] has thought of including among the influenzas. It produced the characteristic effect of influenza on the London weekly bills, and it came in the midst of epidemic agues, just as the epidemic catarrhs of 1658 and 1659 had done. The following rise and fall are just as distinctive of an influenza as on the last occasion in 1675:

1679

Week
Ending		 Fever Smallpox Griping of
the Guts		 All causes
Nov. 11 50 18 34 328
18 89 27 39 541
25 126 21 55 764
Dec.2 82 27 38 457
9 63 12 38 388

Sydenham’s account[590] of this remarkable November outburst of sickness in London, written within a few weeks of its occurrence, is almost exactly a repetition of his language concerning the epidemic coughs of November, 1675. The prevailing intermittent fevers, he says, gave place to a new epidemic depending upon a manifest crasis of the air. The new epidemic was one of coughs, which were so much more general than at the same season in other years that in nearly every family they affected nearly every person. In some cases of the cough, the aid of a physician was hardly needed; but in others the chest was so shaken by the violent convulsive cough as to bring on vomiting, and the head was affected with vertigo. For the first few days the cough was almost dry, and so purely paroxysmal as to remind Sydenham of the whooping-cough of children. Everyone was surprised, he says, at the frequency of these coughs in this season. His own suggestion was that the rains of October[591] had filled the blood with crude and watery particles, that the first access of cold had checked transpiration through the skin, and that Nature had contrived to eliminate this serous colluvies either by the branches of the “vena arteriosa” or (as some will have it) by the glands of the trachea, and to explode it by the aid of a cough. Phlebotomy and purging were the best cures; diaphoretics he considered less safe, and he ascribed to their abuse the fever into which some fell, and the pleurisies which were apt to attack patients with great violence during the subsidence of the epidemic catarrh.