It becomes, then, a matter of symantics about the differences between the types of flu influenza a separates into h1n1 and h3n2 or bird and swine influenza these types are passed from bird to human and swine to human. Flu, also known as influenza, is a respiratory illness caused by a virus influenza is highly contagious and can be life-threatening for some population groups this article explains how flu. The seasonal flu is caused by the influenza a, b, and c viruses, with influenza a and b being the most common types active strains of influenza virus vary from year to year that's why a new. Flu (influenza) influenza (flu) is a common, highly contagious virus that affects the respiratory system the virus can cause a mild to serious illness and even death in young children, older adults and vulnerable people.
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the us department of health and human services, the public health service, the centers for disease control and prevention, or the authors' affiliated institutions. Influenza b virus is almost exclusively a human pathogen, and is less common than influenza a the only other animal known to be susceptible to influenza b infection is the seal  this type of influenza mutates at a rate 2-3 times lower than type a  and consequently is less genetically diverse, with only one influenza b serotype [8. For hundreds of years, typhoid and typhus have plagued the world the two diseases affect millions of people every year, including travelers but, many people do not know the difference between these similarly named diseases. Influenza, commonly known as the flu, is an extremely contagious respiratory illness caused by influenza a or b viruses flu appears most frequently in winter and early spring.
Cholera, typhoid and typhus cholera the cholera germ enters the body via the mouth, usually in contaminated water or food, and sets up an infection in the small intestine. A pandemic is an epidemic occurring on a scale which crosses international boundaries, usually affecting a large number of people pandemics can also occur in important agricultural organisms (livestock, crop plants, fish, tree species) or in other organisms. The seasonal flu vaccine typically contains two different strains of influenza a and one or two strains of influenza b the strains included in the vaccine are the same for all types of flu vaccines in a given year but may change from year to year.
The first cholera pandemic of 1816 to 1824 extended from india to indonesia and russia, killing over 40 million the spanish flu pandemic of 1918 killed well over 50 million people in one year, including 675,000 americans. The 2009-10 seasonal influenza vaccine can protect you from getting sick from these three viruses, or it can make your illness milder if you get a related but different influenza virus strain. Thankfully, there are some key differences between cold vs flu, from symptoms to severity to timing here's how you can tell the difference between a cold and the flu. These differences in age-related mortality patterns closely reflected differences in age-specific attack rates of the influenza virus, which were available from the cleveland family study (jordan et al, 1958a) and tecumseh, michigan (hennessy et al, 1964. Influenza (flu) and pneumonia at first glance may appear the same, but there are distinct differences between the two along with different treatment methods that need to be considered in order to.
Epidemics, pandemics, and outbreaks when is a disease outbreak a concern and what is the difference between an epidemic and a pandemic learn the basics about the spread of serious diseases and. The acellular pertussis vaccine and influenza vaccine (in shot form) are examples of subunit vaccines another type of subunit vaccine can be created via genetic engineering a gene coding for a vaccine protein is inserted into another virus, or into producer cells in culture. Influenza — or the flu, as it's better known — is another upper a table chart showing the differences in symptoms between influenza, a cold, and note: a stomach upset is sometimes. Colds and influenza (flu) are both viral respiratory illnesses but they are caused by different viruses both of these illnesses can have similar symptoms and at first it can be difficult to tell the difference.
The major difference between ebola and the black death is that ebola is spread human to human, while black death was spread rat to flea to rat to human black death had many more places to hide and many more ways to travel. However, because of the possibility that avian influenza a viruses could change and gain the ability to spread easily between people, monitoring for human infection and person-to-person spread is extremely important for public health. The flu is a viral infection caused by the influenza virus that affects your entire respiratory system—nose, throat and lungs 2 since these viruses constantly change, even if you've had the flu in the past, your body might be susceptible to a new strain this year 3. Food poisoning and the flu cause many of the same symptoms, but there are differences between the two if you want to get over your sickness quickly, then understanding whether you have the flu or food poisoning can help you find the right treatment and avoid more serious health complications.
Influenza a is more likely to appear between early winter and the beginning of spring in areas that have distinct seasons influenza b can appear any time of the year both types begin to show symptoms within a week of exposure to the virus. Influenza is commonly called the flu, but it's not the same as stomach flu viruses that cause diarrhea and vomiting for most people, influenza resolves on its own but sometimes, influenza and its complications can be deadly.
Differences between dead and live vaccines live attenuated vaccines consist of weakened viruses or bacteria and are therefore highly unstable they require mandatory refrigeration so that the microbes remain weakened and the chances of mutation are lower. For influenza, tamiflu must be started within 48 hours of symptom onset of influenza and order to be more affective this medication can be expensive but would cut symptoms down by about 24 hours. While the common cold and the influenza virus are two distinct types of illnesses, their symptoms are similar and at times very difficult to distinguish the flu is a viral infection caused by a single respiratory virus (influenza), while a cold is caused by the adenovirus or the coronavirus and its many highly variable subsets. Key difference: flu is a contagious respiratory illness caused by an rna virus from the family known as orthomyxoviridaeit affects birds and mammals on the other hand, bird flu is caused by the influenza type viruses.