Evidence for Limited Early Spread of COVID-19 Within the United States, January--February 2020

Published on June 4, 2020

This report describes evidence suggesting that limited U.S. community transmission of COVID-19 likely began in late January or early February 2020, after a single importation from China, followed by multiple importations from Europe.

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Association between methylphenidate treatment and risk of seizure: a population-based, self-controlled case-series study

June 4, 2020
Individuals with attention-deficit hyperactivity disorder (ADHD) are at increased risk of seizures. Stimulant medications such as methylphenidate are the most commonly prescribed treatment for ADHD.  In the study, there were increased risk of seizure during the first 30 days of methylphenidate treatment compared with that during non-exposed period. No increased risk was observed during continuatio

EARLY RELEASE: Knowledge and Practices Regarding Safe Household Cleaning and Disinfection for COVID-19 Prevention - United States, May 2020

June 5, 2020
This report describes gaps in knowledge about safe preparation, use, and storage of cleaners and disinfectants identified by an internet panel survey.