Parasitology Statistics London 1999
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC TOTAL
                         
E. histolytica/dispar[1]   2 3     1 2 3 3 1 4   19
E. coli 2 11 16 13 5 10 8 19 14 16 10 27 151
E. hartmanni 4 3 4 5 1 2 2 1 7 2 2 9 42
E. polecki                 3       3
E. nana 10 16 16 16 10 9 5 22 10 10 20 15 159
I. buetschlii           2   6       3 11
G. lamblia 13 10 8 5   5 2 16 14 16 20 12 121
D. fragilis 30 25 40 25 27 26 19 24 29 24 21 19 309
B. coli                         0
C. mesnili     2 2   2 1 3 3   1   14
E. hominis               3         3
R. intestinalis                         0
T. hominis     2         3     2   7
T. vaginalis                         0
Unid. Flagellates[2]         2               2
C. parvum             2 3   1     6
C. cayetanensis               1         1
Microsporidium[3]                         0
I. belli                         0
S. hominis                         0
                           
P. pubis[4]                         0
P. humanus[5]                         0
Hardbodied ticks[6]                         0
S. scabei                         0
Arthropods-other[7]                         0
                           
A. lumbricoides             1           1
T. trichiura                     5   5
C. sinensis                         0
D. latum                         0
E. vermicularis   1     1   1 2 1 1     7
Fasciola/Fasciolopsis                         0
H. nana                     3   3
H. diminuta                         0
Hookworm             1       3   4
S. mansoni                         0
S. haematobium                         0
S. japonicum                         0
S. stercoralis                         0
Taenia species             1           1
Trichostrongylus species                         0
                           
Blastocystis hominis[8] 36 25 45 19 24 38 18 29 17 32 24 15 322
                           
Total Specimens[9] 633 645 831 851 649 723 849 883 719 662 599 542 8586
Total Positive Specimens 58 56 89 54 47 51 38 83 71 66 76 58 747
Percent Positive[10] 9.2 8.7 10.7 6.3 7.2 7.1 4.5 9.4 9.9 10.0 12.7 10.7 8.7
Recovery Rate - Percent[11] 9.3 10.5 11.0 7.8 7.1 7.9 5.3 12.0 11.7 10.7 15.2 15.7 10.1

[1]
Differentiation between E. histolytica and E. dispar not performed at this time.
[2]
Identification criteria based on typical flagellate trophozoite with no cyst form seen.
[3]
Enterocytozoon bieneusi
[4]
Includes  both nits and adults.
[5]
Includes both nits and adults.
[6]
Although Ixodes scapularis and other Lyme disease transmitting ticks are identified I. cookei and
D. variabilis are the most common.  For a complete explanation visit
http://www.practicalscience.com
[7]
Arthropods not listed may include various diptera, larva and fleas.
[8]
B. hominis is not counted in total specimens, total positive specimens or percent positive.
[9]
Including total O/Ps, total pinworm preparations and total arthropod and worm identifications.
[10]
Calculated at least quarterly.  Total number of positive specimens divided by the total number of specimens examined.  A ratio change of greater than 1.5 should be investigated.
[11]
Calculated at least quarterly.  Total parasite species identified divided by the total number of specimens examined.  A ratio change of 1.5 should be investigated.