MOSCOW — Russia warned Wednesday against “false” information as reports emerged of a second suspected case of plague in Siberia, with Washington and Brussels calling for transparency and neighboring Mongolia tightening health surveillance. Senior WHO official urges Russia to provide more information on the suspected pneumonic plague cases. Key points and original sources are listed below.

• MOSCOW — Russia warned Wednesday against “false” information as reports emerged of a second suspected case of plague in Siberia, with Washington and Brussels calling for transparency and neighboring Mongolia tightening health surveillance. Russian news outlet...S1

• Senior WHO official urges Russia to provide more information on the suspected pneumonic plague cases.S2