The ongoing outbreak of novel influenza A (H1N1) continues to expand in the United States, according to the U.S. Centers for Disease Control and Prevention. CDC expects that more cases, more hospitalizations and more deaths from this outbreak will occur over the coming days and weeks.

Most cases remain in North America, where a Texan woman died this week, officials said. It is the second death outside Mexico. The 30-year-old suffered from other chronic health issues.

New H1N1 flu cases across Europe and a second U.S. death kept health officials on alert Wednesday despite signs that indicate Mexico's disease incidence had passed its peak. Mexican authorities said the outbreak seemed to be slowing in that country which has been most affected by the virus.

The WHO has certified 822 infections in Mexico and 403 in the United States where authorities said they suspected another 700 "probable" cases. "Those numbers will go up, we anticipate, and unfortunately there are likely to be more hospitalizations and more deaths," said U.S. Health and Human Services Secretary Kathleen Sebelius.

If it continues to spread, WHO would probably move to phase 6, a full pandemic alert. CDC is issuing updates daily in response to the rapidly evolving situation.

Source: CDC, Reuters