$
473
infection outside is quite probable; but if infection occurred in
this case in the Gaol oakum infected by some of the previous cases
may have done it. Septicaenic. Condition still serious.
4th. June. 15. Ng Hang, male, act. 26. Admitted to Gaol
2$rd. May. As 12 days had elapsed since admission, infection la
Gaol is probable. I find it difficult to account for this case.
He may have been infected during exercise on 31st. May, when he
was near case 9, Yeung Hin, whose symptoms developed late that
evening ( I was summoned to Gaol to see him after 10 P.M.), and
also near case 10, who became 111 on the following day.
His case is Bubonic, and as yet appears to be
severe.
Reviewing the foregoing, infection in cases
1, 2, 3, 4, 8, 11, and 12 were practically certainly outside the
Gaol, and 9 is doubtful.
An immediate inference is, that there is a
very wide infection with plague among the lower class population
of the City, much more so than is appearing in the cases
actually detected and returned.
Of the others, there is strong probability
that all, or most, of the Warders, 5, 6, 13, and 14 were infected
in the Gaol; and the prismets 7, 10, and 15 were infected within
the institution.
Before deciding on the sources of infection
which I have adduced as being probable, I carefully reviewed
others possible.
Rats can be excluded. There are no ratholes,
and rats are never seen. They have been caught within the manholes
of drains, but are prevented from entering the gaol itself.
Fleas were noticed about the cocoa aut matting
that