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Table 1 estimated illnesses, hospitalizations and deaths caused by pathogens capable of being food bourne.
Disease / agent
Illness episodes
Hospitalizations
Deaths
BACTERIAL
Campylobacter spp.
1 963 141
10 539
99
Clostridium perfingens
248 520
41
7
E.coli 0157
62 458
1843
52
Listeria monocytogenes
2493
2298
499
Salmonella
1 341 873
15 608
553
Vibro cholerae
49
17
0
Other known bacteria
557 031
6120
87
PARASITIC
Cryptosporidium parvum
30 000
199
Giardia lamblia
200 000
500
1
Toxoplasma gondii
112 500
2500
375
Other known parasites
14 690
20
VIRAL
Norwalk-like viruses
9 200 000
20 000
124
Rotavirus
39 000
Astrovirus
125
Hepatitis A
4170
90
4
TOTAL
13 814 925
60 400
1808
Table 1 presents data from a study on the extent of mainly food bourne infections in a population of 275 million people during 1948 to 1997. An illness episode (or case0 refers to a period f illness resulting from a foodbourne infection (so more than one episode can be experienced by the same individual in the same year) and similarly the data on hospitalizations refer to the number of periods of inpatiant stay, not the number of people affected
Q1). Calculate the case fatality rate for Toxoplasma gondii from above table, please show all working.
Q2). What are the two infectious agents that pose the greatest health risk to infected individuals, for each infectious agent chosen, describe why you decided to choose them.
Q3) what is the annual incidence of illness episodes due to food bourne Campylobacter infections in the surveyed population during the period of the study- please show full working out!
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