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Numbers of HMPV strains detected in Yokohama City between January 2013 and June 2016 and their subgroup classification.
| 180nt-dupa | Year of virus detection | Total | ||||
|---|---|---|---|---|---|---|
| Subgroup | 2013 | 2014 | 2015 | 2016 | ||
| A2a | - | 4 | 1 | 1 | 0 | 6 |
| A2b | - | 11 | 3 | 12 | 2 | 28 |
| + | 0 | 3 | 10 | 2 | 15 | |
| B1 | - | 2 | 2 | 1 | 5 | 10 |
| B2 | - | 14 | 6 | 0 | 5 | 25 |
| Total | 31 | 15 | 24 | 14 | 84 | |
a180-nt duplication.
