What is H1N1 made of?
What is H1N1 made of?
In the spring of 2009, scientists recognized a particular strain of flu virus known as H1N1. This virus is a combination of viruses from pigs, birds and humans that causes disease in humans. During the 2009-10 flu season, H1N1 caused the respiratory infection in humans that was commonly referred to as swine flu.
Is H1N1 a DNA virus?
Influenza A viruses, including seasonal and pandemic H1N1 viruses, are RNA viruses with an enormous capacity for evolving and diversifying. The size of a human genome is three billion bases, with coding for more than twenty thousand genes.
How is H1N1 different from the flu?
Flu symptoms include fever, cough, runny nose, sore throat, body aches, headache, chills and fatigue. With H1N1 flu sometimes there is diarrhea and vomiting. If you get these symptoms, stay home and limit contact with others until at least 24 hours after your fever has gone without the use of medicine.
What is the H1N1 virus outermost protein?
The designation “H1N1” indicates unique traits, which exhibit characteristics that identify the virus to the immune system and allows for attachment and replication of the virus. The “H” (hemagglutinin) and the “N” (neuraminidases) are both proteins that are found on the outer shell or envelope of the virus.
Where did H1N1 come from?
Veracruz, Mexico: The origin of the 2009 swine flu outbreak. Health workers traced the virus to a pig farm in this southeastern Mexican state. A young boy who lived nearby was among the first people to contract the swine flu. They lived, but others in the area came down with the flu and died.
What ended the swine flu?
A CDC study released 28 January 2013, estimated that the Pandemic H1N1 vaccine saved roughly 300 lives and prevented about a million illnesses in the US. The study concluded that had the vaccination program started two weeks earlier, close to 60% more cases could have been prevented.
Is the Spanish flu and H1N1 the same?
The 1918 Spanish flu was the first of three flu pandemics caused by H1N1 influenza A virus; the most recent one was the 2009 swine flu pandemic. The 1977 Russian flu was also caused by H1N1 virus.
Where did H1N1 originate from?
Veracruz, Mexico
Veracruz, Mexico: The origin of the 2009 swine flu outbreak. Health workers traced the virus to a pig farm in this southeastern Mexican state. A young boy who lived nearby was among the first people to contract the swine flu. They lived, but others in the area came down with the flu and died.
What is the difference between H1N1 and H5N1?
It is known that avian influenza H5N1 viruses can occasionally infect but not transmit among humans, while the 2009 pandemic H1N1 virus (which continues to circulate) readily transmits from person to person.
What does the H and N mean in flu?
Influenza A viruses are classified by subtypes based on the properties of their hemagglutinin (H or HA) and neuraminidase (N or NA) surface proteins. There are 18 different HA subtypes and 11 different NA subtypes. Subtypes are named by combining the H and N numbers – e.g., A(H1N1), A(H3N2).
What does the H and N mean in H1N1?
Influenza A viruses are divided into subtypes based on two proteins on the surface of the virus: hemagglutinin (H) and neuraminidase (N).
Is the flu virus RNA or DNA?
-stranded RNA
All influenza viruses consist of single-stranded RNA as opposed to dual-stranded DNA. The RNA genes of influenza viruses are made up of chains of nucleotides that are bonded together and coded by the letters A, C, G and U, which stand for adenine, cytosine, guanine, and uracil, respectively.
What animal did the flu come from?
Answer: Influenza is a virus that’s spread from person to person. It originates, actually, among birds and other animals such as pigs, and new viral strains of influenza come to this country and to Europe from Southeast Asia. That’s the global pattern.
What is H and N in H1N1?
Is H5N1 DNA or RNA?
The H5N1 highly pathogenic avian influenza (HPAI) virus belongs to the family Orthomyxoviridae. It is an enveloped virus with an eight-segmented, single-stranded RNA genome of negative polarity, with a length of about 13.5 kb in total.
Is flu RNA or DNA?
stranded RNA
Is Ebola an RNA virus?
The virion nucleic acid of Ebola virus consists of a single-stranded RNA with a molecular weight of approximately 4.0 x 10(6).