However, the small changes associated with antigenic drift can accumulate over time and result in viruses that are antigenically different further away on the phylogenetic tree.
It also is possible for a single change in a particularly important location on the HA to result in antigenic drift. Antigenic drift is an important reason why people can get flu more than one time. Drift is also a primary reason why the composition of flu vaccines for use in the Northern and Southern Hemispheres is reviewed annually and updated as needed to keep up with evolving flu viruses. Antigenic shift can result in a new flu A subtype. Shift can happen if a flu virus from an animal population gains the ability to infect humans.
When shift happens, most people have little or no immunity against the new virus. We offer unlimited malware removal with no hidden fees. Learn More. Our constant research improves how we detect and mitigate evolving threats.
As a precaution, you should always have a backup of your website and associated files. Detect Website Security Issues Check your website for security anomalies, configuration issues, and security recommendations. Free Joomla! Scan Joomla! Check Joomla! Detect Joomla! Healthcare Workers. Health Departments. Health Equity Health equity is when everyone has the opportunity to be as healthy as possible. Latest Updates. Facebook Twitter LinkedIn Syndicate. Last Updated Jan. Some experts believe the threat could have gone undetected for more than two years, and many are concerned that hackers could have been secretly exploiting the flaw for a long time even before the problem was discovered.
Free CP Newsletters Join over , others to get the top stories curated daily, plus special offers! Do you want award-winning journalism with a Christian worldview , delivered to your inbox? Military works to boot Christian 'extremists' from its ranks The church must not be silent on the vaccine debates Does God ever go silent? Preparing for the AI tsunami: Stages in civilization part 2. Saturday, April 12,
0コメント