( 5 ) 
Yellow fever presented the malarial parasites in the blood, and we know that 
malaria does not protect from Yellow fever. Unquestionably, the post-mortem 
is the most reliable method of arriving - at a correct diagnosis, and no stone 
should be left unturned to obtain an autopsy in any suspicious case. It is 
also very clear that in countries liable to yellow fever a close watch must be 
kept upon a rise in the mortality from “ malaria,” especially in months when 
such a rise is unusual. 
The Influenza Cases . — Commencing towards the end of April and lasting 
to the middle of May, there was a short three weeks’ epidemic of a disease which 
was regarded as influenza, and which presented the following symptoms : — The 
onset of the disease was sharp, but did not last long, the patient going to 
work on the fourth or fifth day. All the members of a family might be 
attacked, one after the other, and both fresh arrivals and old residents were 
equally affected, as also the white and black population. There were no fatal 
cases. The symptoms consisted of a severe headache, temperature 104° to 105°, 
rapid and extreme prostration, vomiting not as a rule present. Nothing 
definite with regard to the pulse is recorded. The complications were those 
of the respiratory tract, coryza, laryngitis and bronchitis. Major B., who 
died of Yellow fever on June 4th, had an attack of what was regarded as 
influenza on May 15th. his son having been previously attacked at the end 
April. The opinion held by the medical profession in Belize is that there 
was a short epidemic of genuine influenza ; but on the other hand there is 
evidence to show that in certain cases the disease might well have been 
Yellow fever. 
Apart from the malarial and influenza cases I did not find in the 
Registrar’s returns, deaths from any other cause which might reasonably be 
viewed with suspicion. 
I he following is a grouping in chronological order of all cases which, 
upon re-investigation in the light of the experience of the epidemic, might 
now be regarded as extremely suspicious, or as genuine cases of Yellow 
fever, together with the cases which were returned at the time as Yellow 
fever. 
Earliest Suspicious Cases. 
Middle of January. — Mr. J. J. F., occupying a house in Gabourel Lane was ill with fever in 
January, about the middle of the month. He had very slight jaundice and nausea, i.e., his sclene 
were jaundiced, but there was nothing special regarding the pulse. His little daughter followed in 
about a fortnight, but beyond being a persistent fever it had no special features. At this time 
February 11, Mr. J. W. C. was ill. 
February n. — J. W. C., aged 32, recent arrival in Belize, but been on the East Coast of 
Africa for many years. English. History is interesting. States that for the past week he has 
noticed his urine very dark, more like blood, and scanty, had intended to see Doctor, but postponed 
matters. Felt he had a chill during the night and woke up feeling miserable; however in the 
morning he went to work, but felt very miserable, and thought he ought to see a medical man. Seen 
at 2 p.m., temperature io 3’6, pulse 72. Eyes congested and sclera: jaundiced. No tenderness over 
epigastrium, but feels tender more to right side, and a heavy feeling as if of a weight radiating from 
right side to centre of abdomen. Gums are clean. Tongue is but slightly furred, breath is foul. 
Urine dark, bile coloured and cloudy. Albumin, a trace. Tenderness over spleen, headache, 
great thirst Had a fair night, felt so much better that he got up and dressed himself. Urine 
