Journal List > J Bacteriol Virol > v.45(4) > 1034196

Ham, Jang, and Han: Epidemiological Investigation of a Measles Outbreak in Seoul, 2013~2014

Abstract

Korea declared in 2006 that measles had been eliminated; however, a measles outbreak occurred in the southeastern area of Korea in 2011. Active surveillance of measles patients was conducted in Seoul 3 cases were detected in 2013 and 103 cases in 2014. Of 106 confirmed measles patients, 32 cases were within one university in Seongbukgu, and 23 were within three schools in Yongsangu. Students 14~29 years old comprised 78.3% (83/106) of the cases, and 75.5% (80/106) of the measles viruses were of genotype B3. One foreign traveler played an important role in the measles outbreak in Seoul. This measles outbreak in Seoul may provide useful data for future epidemiological studies of measles.

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Figure 1.
Distribution of confirmed measles cases according to the location of transmission in Seoul, Republic of Korea during the 2013 outbreak.
jbv-45-372f1.tif
Figure 2.
Identified epidemiological linkage of measles transmission in Seoul, Republic of Korea, during the 2014 outbreak.
jbv-45-372f2.tif
Table 1.
Monthly distribution of confirmed measles cases in Seoul, Republic of Korea during the 2013~2014 outbreak.
Year Months 1 2 3 4 5 6 7 8 9 10 11 12 Total
2014 Sample No. 2 3 1 13 182 96 15 13 8 6 6 6 351
  Positive No.   2   2 74 23     1 1     103
2013 Sample No. Positive No.       3 2   3 3 1 2 4 1 2 1 4 23 3
Total Sample No. 2 3 1 16 190 96 18 16 10 10 8 10 374
  Positive No.   2   2 74 23   1 1 2 1   106
Table 2.
Distribution of confirmed measles cases according to age group in Seoul, Republic of Korea during the 2013~2014 outbreak
  Age group (2014) ()=No. positive
Year Gender Total 0~7 8~13. 14~16 . 17~19. 20~29. 30~39. 40~49. '50~ Unknown
2014 Male 210 (77) 41 (7) 11 (1) 12 (6) 80 (38) 50 (20) 8 (2) 4 (2) 1 (0) 3 (1)
Female 141 (26) 51 (2) 11 (1)     46 (19) 11 (1) 3 (1) 2 (0) 2 (2)
Total 351 (103) 92 (9) 22 (2) 12 (6) 80 (38) 96 (39) 19 (3) 7 (3) 3 (0) 5 (3)
2013 Male 7 (1) 5 (1)       2 (0)        
Female 11 (2) 8 (2) 2 (0)     1 (0)        
Unknown 5 (0)                 5 (0)
Total 23 (3) 13 (3) 2 (0)     3 (0)       5 (0)
Total Male 217 (78) 46 (8) 11 (1) 12 (6) 80 (38) 52 (20) 8 (2) 4 (2) 1 (0) 3 (1)
Female 152 (28) 59 (4) 13 (1)     47 (19) 11 (1) 3 (1) 2 (0) 2 (2)
Unknown 5 (0)                 5 (0)
Total 374 (106) 105 (12) 24 (2) 12 (6) 80 (38) 99 (39) 19 (3) 7 (3) 3 (0) 10 (3)
Table 3.
Serotype distribution of confirmed measles cases in Seoul, Republic of Korea during the 2013– 2014 outbreak
Serotypes of measles virus Confirmed viruses
Serotype A 1
Serotype B3 80
Serotype D9 1
Unknown other serotypes 24
Total 106
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