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in the St. Petersburg district and at Archangel, Cronstadt, Riga and
other Baltic Ports, has now extended to Holland, and that several cases
and deaths have already occurred at Rotterdam and in the vicinity.
"The Sanitary Authorities of British ports trading with Rotterdam, or
with North Russian ports, should be on their guard against the
importation of Cholera into their districts by vessels coming from places
where the disease has appeared or is likely to appear. In this connexion
it is essential that the Medical Officers of Health of such British
ports should endeavour to keep themselves informed as to the spread of
the present outbreak of Cholera, and especially as to the continuance of
the disease in ports where it now exists, and its appearance in other
ports not yet known to be affected by it. The statement which the
Board issue weekly to the Medical Officers of Health of Port and
Riparian Sanitary Authorities, and which contains information as to such
Cholera occurrences as have come under the Board's notice, will be of
assistance in this direction.
"I am to remind you that on September 9th, 1907, the Board issued a
revised General Order relating to Cholera, Yellow Fever and Plague on
ships arriving from Foreign ports.
"The Board rely on the Port and Riparian Sanitary Authorities taking
all necessary steps under that Order to prevent the introduction of
Cholera into this Country.
"The Board will be glad if you will supply the Medical Officer of
Health with a copy of this circular.
"I am, Sir,
"Your obedient Servant,
"S. B. PROYIS,
"Secretary.
"To the Clerk to the Port Sanitary
"Authority or the Clerk to the
"Riparian Sanitary Authority."
The following letter was sent to the owners of vessels trading between
Rotterdam and London.
" 1st September, 1909.
"Gentlemen,
" Owing to the occurrence of Cholera at Rotterdam, all
vessels coming from thence will be medically inspected at Gravesend,
and, if necessary, the ship must be brought to for that purpose.
" The Master should have a list containing the names and addresses
of all persons on board, which should be handed to the Medical Officer
at Gravesend on arrival.