Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2009 May 1;58(16):431-3.

Update: infections with a swine-origin influenza A (H1N1) virus--United States and other countries, April 28, 2009

Centers for Disease Control and Prevention (CDC)
  • PMID: 19407737
Free article

Update: infections with a swine-origin influenza A (H1N1) virus--United States and other countries, April 28, 2009

Centers for Disease Control and Prevention (CDC). MMWR Morb Mortal Wkly Rep. .
Free article

Abstract

Since April 21, 2009, CDC has reported cases of respiratory infection with a swine-origin influenza A (H1N1) virus (S-OIV) transmitted through human-to-human contact. This report updates cases identified in U.S. states and highlights certain control measures taken by CDC. As of April 28, the total number of confirmed cases of S-OIV infection in the United States had increased to 64, with cases in California (10 cases), Kansas (two), New York (45), Ohio (one), and Texas (six). CDC and state and local health departments are investigating all reported U.S. cases to ascertain the clinical features and epidemiologic characteristics. On April 27, CDC distributed an updated case definition for infection with S-OIV.

PubMed Disclaimer