The ECDC Communicable Disease Threats Report (CDTR) is a weekly bulletin for epidemiologists and health professionals on active public health threats. This issue covers the period 31 December 2017-6 January 2018 and includes updates on hepatitis A, influenza, MERS, poliomyelitis and salomnellosis.
The ECDC Communicable Disease Threats Report (CDTR) is a weekly bulletin for epidemiologists and health professionals on active public health threats. This issue covers the period 17-23 December 2017 and includes updates on dengue, chikungunya, influenza, Salmonella and measles.

Summary
What is already known about this topic?
Zika virus infection during pregnancy causes serious brain abnormalities and/or microcephaly and has been associated with other severe birth defects. Local transmission of Zika virus was reported in U.S. territories in 2016.
What is added by this report?

Key updates
Countries, territories and subnational areas reporting vector-borne Zika virus (ZIKV) infections for the first time since 1 February: None
Countries and territories reporting microcephaly and other central nervous system malformations potentially associated with ZIKV infection for the first time since 1 February: Mexico, Saint Martin
Countries and territories reporting Guillain-Barré syndrome cases associated with ZIKV infection for the first time since 1 February: Curaçao, Trinidad and Tobago

KEY UPDATES
- Countries and territories reporting mosquito-borne Zika virus infections for the first time in the past two weeks:
o None
- Countries and territories reporting microcephaly and other central nervous system (CNS) malformations potentially associated with Zika virus infection for the first time in the past two weeks:
o None

KEY UPDATES
Countries and territories reporting mosquito-borne Zika virus infections for the first time in the past two weeks: o Angola
Countries and territories reporting microcephaly and other central nervous system (CNS) malformations potentially associated with Zika virus infection for the first time in the past two weeks: o None
Countries and territories reporting Guillain-Barré syndrome (GBS) cases associated with Zika virus infection for the first time in the past two weeks: o None

KEY UPDATES
Countries and territories reporting mosquito-borne Zika virus infections for the first time in the past week:
o None
Countries and territories reporting microcephaly and other central nervous system (CNS) malformations potentially associated with Zika virus infection for the first time in the past week:
o None
Countries and territories reporting Guillain-Barré syndrome (GBS) cases associated with Zika virus infection for the first time in the past week:
o None

KEY UPDATES
Countries and territories reporting mosquito-borne Zika virus infections for the first time in the past week:
NoneCountries and territories reporting microcephaly and other central nervous system (CNS) malformations potentially associated with Zika virus infection for the first time in the past week:
NoneCountries and territories reporting Guillain-Barré syndrome (GBS) cases associated with Zika virus infection for the first time in the past week:
Saint Martin

KEY UPDATES
Countries and territories reporting mosquito-borne Zika virus infections for the first time in the past week:
- None
Countries and territories reporting microcephaly and other central nervous system (CNS) malformations potentially associated with Zika virus infection for the first time in the past week:
- None
Countries and territories reporting Guillain-Barré syndrome (GBS) cases associated with Zika virus infection for the first time in the past week:

Key updates
Countries and territories reporting mosquito-borne Zika virus infections for the first time in the past week:
None
Countries and territories reporting microcephaly and other central nervous system (CNS) malformations potentially associated with Zika virus infection for the first time in the past week:
None
Countries and territories reporting Guillain-Barré syndrome (GBS) cases associated with Zika virus infection for the first time in the past week:
None

KEY UPDATES

KEY UPDATES

KEY UPDATES

KEY UPDATES
Countries and territories reporting mosquito-borne Zika virus infections for the first time in the past week:
o None
Countries and territories reporting microcephaly and other central nervous system (CNS) malformations potentially associated with Zika virus infection for the first time in the past week:
o Argentina and Guadeloupe
Countries and territories reporting Guillain-Barré syndrome (GBS) cases associated with Zika virus infection for the first time in the past week:
o None

KEY UPDATES
Countries and territories reporting mosquito-borne Zika virus infections for the first time in the past week:
o Montserrat, Palau
Countries and territories reporting microcephaly and other central nervous system (CNS) malformations potentially associated with Zika virus infection for the first time in the past week:
o None
Countries and territories reporting Guillain-Barré syndrome (GBS) cases associated with Zika virus infection for the first time in the past week:
o None

KEY UPDATES
- Countries and territories reporting mosquito-borne Zika virus infections for the first time in the past week:
o None
- Countries and territories reporting microcephaly and other central nervous system (CNS) malformations potentially associated with Zika virus infection for the first time in the past week:
o Bolivia, Trinidad and Tobago, and Viet Nam

KEY UPDATES
- Countries and territories reporting mosquito-borne Zika virus infections for the first time in the past week:
o None
- Countries and territories reporting microcephaly and other central nervous system (CNS) malformations potentially associated with Zika virus infection for the first time in the past week:
o None
- Countries and territories reporting Guillain-Barré syndrome (GBS) cases associated with Zika virus infection for the first time in the past week:
o None
Foreword
WHO EXECUTIVE DIRECTOR OF HEALTH EMERGENCIES PROGRAMME

KEY UPDATES
Countries and territories reporting mosquito-borne Zika virus infections for the first time in the past week: o None
Countries and territories reporting microcephaly and other central nervous system (CNS) malformations potentially associated with Zika virus infection for the first time in the past week: o Grenada
Countries and territories reporting Guillain-Barré syndrome (GBS) cases associated with Zika virus infection for the first time in the past week: o None

KEY UPDATES
Countries and territories reporting mosquito-borne Zika virus infections for the first time in the past week: o None
Countries and territories reporting microcephaly and other central nervous system (CNS) malformations potentially associated with Zika virus infection for the first time in the past week: o None
Countries and territories reporting Guillain-Barré syndrome (GBS) cases associated with Zika virus infection for the first time in the past week: o None