MMWR. Morbidity and mortality weekly report

Update: Influenza Activity \u2014 United States, October 1, 2017\u2013February 3, 2018 -- Interim Estimates of 2017\u201318 Seasonal Influenza Vaccine Effectiveness \u2014 United States, February 2018 -- Prevalence of Obesity Among Youths by Household Income and Education Level of Head of Household \u2014 United States 2011\u20132014 -- Health-Risk Behaviors and Chronic Conditions Among Adults with Inflammatory Bowel Disease \u2014 United States, 2015 and 2016 -- Reasons for Electronic Cigarette Use Among Middle and High School Students \u2014 National Youth Tobacco Survey, United States, 2016 -- Notes from the Field: Underreporting of Maternal Hepatitis C Virus Infection Status on Infant Birth Certificates and Adequacy of Infant Testing \u2014 Oregon, 2015 -- QuickStats: Age-Adjusted Trends in the Prevalence of Herpes Simplex Virus Type 1 (HSV-1) and Herpes Simplex Virus Type 2 (HSV-2) Among Adolescents and Adults Aged 14\u201349 Years \u2014 United States, 1999\u20132000 Through 2015\u20132016.2018726