Which flu is worse H1N1 and H3N2?

Which flu is worse H1N1 and H3N2?

Conclusions: Influenza A H3N2 infection was more severe than A H1N1 or B in terms of fever, leukopenia, and C-reactive protein. Myalgia and other symptoms such as fever, headache, general malaise and sore throat were equally frequent in influenza A H3N2, A H1N1, and B infections.

Is H1N1 same as bird flu?

Some strains of H1N1 are endemic in humans and cause a small fraction of all influenza-like illness and a small fraction of all seasonal influenza, for instance in 2004–2005. Other strains of H1N1 are endemic in pigs (swine influenza) and in birds (avian influenza).

What is the deadliest strain of flu?

What is the difference between H1N1 and H5N1?

The H5N1 virus (red RNAs) is not transmissible among guinea pigs, while the H1N1 virus (green RNAs) has highly efficient transmission. Exchange of the H5N1 RNA coding for PA or NS from H1N1 produces a highly transmissible virus. Exchange of the H5N1 RNA coding for NA or M produces a less efficiently transmitted virus.

What kind of flu is H3N2?

Influenza A virus subtype H3N2 (A/H3N2) is a subtype of viruses that causes influenza (flu). H3N2 viruses can infect birds and mammals. In birds, humans, and pigs, the virus has mutated into many strains. In years in which H3N2 is the predominant strain, there are more hospitalizations.

How did Canada react to H1N1?

Public Health Response In Canada, all levels of government cooperated in their response to the H1N1 pandemic. At the federal level, the Public Health Agency of Canada (PHAC) led and regulated the nation’s efforts. Its influenza preparedness plan guided the response.

What does the 1 in H1N1 stand for?

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.

What does the H and N stand for in H1N1?

Influenza A viruses are divided into subtypes based on two proteins on the surface of the virus: hemagglutinin (H) and neuraminidase (N).

What is the deadliest disease in the world?

1. Ischemic heart disease, or coronary artery disease. The deadliest disease in the world is coronary artery disease (CAD). Also called ischemic heart disease, CAD occurs when the blood vessels that supply blood to the heart become narrowed.

Is H5N1 a pandemic?

The global spread of H5N1 influenza in birds is considered a significant pandemic threat. While other H5N1 influenza strains are known, they are significantly different on a genetic level from a recent, highly pathogenic, emergent strain of H5N1, which was able to achieve hitherto unprecedented global spread in 2008.

What does H and N mean in H1N1?

Is H3N2 the swine flu?

H3N2v is a non-human influenza virus that normally circulates in pigs and that has infected humans. Viruses that normally circulate in pigs are “swine influenza viruses.” When these viruses infect humans, they are termed “variant” viruses.

How are H5N1 and H7N9 viruses adapted to humans?

While H5N1 and H7N9 strains can directly infect humans from birds, these viruses have not yet adapted sufficiently to spread from human to human. They could adapt either through random mutations, or by generating a mixed or “reassortant” virus.

How did the who know about the H1N1 virus?

The outbreak had been predicted a year earlier by noticing the increasing number of replikins, a type of peptide, found in the virus. On 11 June 2009, the WHO declared an H1N1 pandemic, moving the alert level to phase 6, marking the first global pandemic since the 1968 Hong Kong flu.

How big is the H1N1 virus in pigs?

Other strains of H1N1 are endemic in pigs ( swine influenza) and in birds ( avian influenza ). Its size is 80 to 120 nm (3.1 × 10 −6 to 4.7 × 10 −6 in) in diameter. Swine influenza (also known as swine flu or pig flu) is a respiratory disease that occurs in pigs that is caused by the Influenza A virus.

Is the H7N9 virus endemic in birds?

Indeed, avian influenza strains are endemic in wild birds, especially in Asia. But, interestingly, most birds don’t get ill from the flu. The new H7N9 strain emerging in China does not make birds ill, for instance, but has been killing about a third of infected humans.