Table 4.
Measles Outbreaks with ≥20 Case-Patients in the United States during 2009—2014
| Year | Cases, no. |
Primary state/ reporting district |
Primary setting of outbreak |
Median Age of case-patients |
Source Country (genotype) |
No. (%) unvaccinated |
No. (%) with unknown vaccination status |
Total number (%) of Philosophical or Religious Objectorsb |
No. (%) too young for being vaccinatedb |
No. (%) with other/unknown reasons for not being vaccinatedb,d |
|---|---|---|---|---|---|---|---|---|---|---|
| 2014 | 383 | OH | Household/Community | 15 years | Philippines (D9) | 340 (89) | 38 (10) | 281 (83) | 20 (6) | 39 (12) |
| 2013 | 59 | NYC | Household | 4 years | United Kingdom (D8) | 59 (100) | 0 (0) | 54 (92) | 4 (7) | 1 (2) |
| 2014 | 43 | KS/MO | Household | 21 years | Federated States of Micronesia (B3) | 29 (67) | 10 (23) | 2 (7) | 7 (24) | 20 (69) |
| 2014 | 34 | CAa+ 3 states | Community | 18 years | Unknown (B3) | 23 (68) | 5 (15) | 11 (48) | 2 (9) | 10 (44) |
| 2014 | 25 | NYC | Community | 22 years | Unknown (B3) | 9 (36) | 10 (40) | 2 (22) | 4 (44) | 3 (33) |
| 2013 | 23 | NC | Household/Community | 14 years | India (D8) | 18 (78) | 2 (9) | 18 (100)c | 0 (0) | 0 (0) |
| 2013 | 21 | TX | Church | 13 years | Indonesia (D9) | 18 (86) | 1 (5) | 17 (94) | 1 (6) | 0 (0) |
| 2011 | 21 | MN | Shelter | 23 months | Kenya (B3) | 17 (81) | 4 (19) | 7 (41) | 7 (41) | 3 (18) |
a
The 2014 California outbreak continued into 2015 (and was much larger and affected additional states than the total reported here). However, this report only included data through week 52 in 2014.
b
Denominators were the number unvaccinated.
c
An additional case-patient with unknown vaccination status was reported as having a philosophical or religious objection but was not included in this cell since the denominator only included unvaccinated case-patients (not those with unknown vaccination status).
d
Other reasons included: missed opportunity, invalid dose, on an alternative plan, hard to reach, just turned 12 months, and unknown.