your questions answered
cheap air force But there cheap jordans mens shoes are seasonal influenza outbreaks occuring in different parts of the the world all the time. Seasonal flu affects millions of people each year, and almost 2,500 Australians die from flu related illnesses each year (most of these people are over 65). cheap air force
Cheap jordans How does seasonal flu differ from cheap aaa quality jordans pandemic flu?In temperate climates, seasonal flu epidemics occur during the winter months so there is a northern hemisphere seasonal flu season and a southern hemisphere flu season. In tropical climates flu outbreaks tend to occur in wet season, but not always. Cheap jordans
cheap jordans shoes Seasonal flu viruses constantly change or mutate as they emerge from the tropics and circulate in the hemispheres during their flu seasons, which is why virus experts are constantly working to identify the viruses that need to be included in new vaccines. The viruses retro jordans for cheap price we see during our southern hemisphere flu season are not the same as those in the northern hemisphere (read Dr Norman Swan’s discussion with Dr Colin Russell, head of epidemiology at the Centre for Pathogen Evolution at the University of Cambridge in the UK). cheap jordans shoes
cheap Air max shoes These changes in the flu virus make it difficult for our immune systems to recognise the infection for a second time, explaining why a previous bout of the flu does not necessarily prevent subsequent infections. cheap Air max shoes
Professor Anne Kelso is the director of the World Health Organisation (WHO) Collaborating Centre real authentic jordans for cheap for Influenza in Melbourne, which belongs to the network that tracks influenza viruses worldwide and contributes to new vaccines. She says pandemic virus do not follow the same patterns as seasonal flu.
cheap jordans online “Therefore these [viruses] can spread like wildfire, but they vary a lot in how severe they are.” cheap jordans online
cheap jordans from china “Under the right circumstances, flu viruses from pigs or birds can exchange genes, producing new viruses. Because the human immune system has never been exposed to this virus before, and has no ability to recognise it, the virus can spread very quickly human to human causing a pandemic,” Kelso says. cheap jordans from china
cheap jordans free shipping Types of flu viruses cheap jordans free shipping
cheap adidas There are three types of viruses responsible for seasonal influenza: A, B and cheap jordans C. Type C is very rare and tends to cause minor symptoms. The type A viruses are further subtyped by 16 H types and 9 cheap jordans 9 N types. The “H” stands for haemaglutinin and the ‘N” stands for neuraminidase. These are changeable structures in the cheap air jordan shoes free shipping virus that interact with the immune system. This HN classification is pretty retro jordans for sale cheap online crude since there is lots of variation even within these categories. cheap cheap jordans retro 13 adidas
The bird flu, which until this year has received the most attention as a potential pandemic virus, is H5N1. There are currently three main seasonal viruses causing influenza in humans two A cheap authentic jordan shoes viruses (A)H1N1 and (A)H3N2 and one B virus. To further cheap jordans 50 dollars confuse things the human (A)H1N1 virus is different from the (A)H1N1 subtype swine flu virus that originated in Mexico.
cheap jordans in china For more background information on flu check out our influenza fact file. cheap cheap jordans 23 jordans in china
cheap yeezys Bird flu has super cheap jordan shoes never become a pandemic because it seems to lack this ability to spread easily between humans. cheap yeezys
cheap jordans sale It is important cheap jordans usa to note that not all flu viruses that become pandemics are deadly. Pandemic refers to where and how the flu is spread, not the severity of the illness. cheap jordans sale
cheap jordans china “It’s about the global spread of a new pathogen,” says Kelson. cheap jordans china
cheap jordans for sale “If [the WHO] decides the current [swine flu] virus is causing a pandemic and raises the level of pandemic phase to six cheap jordans on sale , that won’t be related to cheap authentic jordans the severity of the disease. Kelso says there are many possible explanations for the link between winter and the flu. cheap jordans for sale
cheap jordans on sale One popular suggestion is that the cheap jordan 11 shoes cool weather forces us to cheap jordans 3 spend more time cooped up indoors with other people, providing the perfect breeding ground for cheap jordan sneakers for men flu. The flu is highly contagious and spreads when infected people cough or sneeze, sending virus laden droplets into the air. If you happen to be close to the person coughing or sneezing, or come in contact with surfaces they have contaminated, then all you need to do is transfer the virus into your system. This usually happens via the nose, mouth or eyes. cheap jordans on sale
“It’s also been suggested that lower vitamin D levels, because of lack of sunlight https://www.mzbredshoes.com , might be affecting people’s ability to defend themselves against the virus,” Kelso says.
cheap jordan sneakers But she believes new research provides another very compelling explanation. cheap jordan sneakers
cheap air jordan “There’s a recent paper which suggests it’s how dry the air is. The absolute vapour pressure in the air is related to cheap air jordans the ability of the virus to survive and be transmitted between people. So the drier the air the easier it is for the virus to survive and be transmitted.” cheap air jordan
cheap nike shoes Low humidity also tends to dry out and irritate your nose, which can make you more susceptible to infections cheap retro jordans online transferred via fingers and inanimate objects cheap nike shoes.