How many places in Philippines are called Serum?

There is one place named Serum in Philippines.

All places in the world called "Serum".

Location Serum:

• Samar

Cities

San Jose (81)
San Isidro (69)
San Roque (62)
Santa Cruz (62)
San Miguel (58)
San Antonio (57)
San Juan (54)
Buenavista (50)
San Vicente (47)
Rizal (47)
Santo Niño (42)
Mabini (41)
San Agustin (38)
Concepcion (37)
San Pedro (36)
San Francisco (36)
San Rafael (36)
Bato (35)
Santa Rosa (32)
Sabang (31)
Santiago (31)
Libertad (30)
Bagacay (30)
Santa Maria (28)
San Nicolas (28)
Looc (27)
Santa Ana (27)
Santo Tomas (27)
San Luis (26)
Pandan (26)