Because the rhinovirus (which is one virus that causes the common cold) mutates and changes its structure extremely frequently as do the other viruses that cause the common cold, such as Coronaviruses, and any of the others of hundreds of viruses that cause colds. While influenza strains also mutate, it is not as quickly as cold viruses that almost constantly are mutating, resulting in several dozen active viruses in any one locality.
In addition, influenza has proven reasonably easy to grow in labs for study and for vaccine production, while cultivating rhinoviruses has proven very difficult.
You are not immune to Influenza. Even getting the yearly flu vaccine is no guarantee that a person won't get the flu. You can get the flu but it won't be as bad as it could be if you hadn't received the flu vaccine.
The common cold is an upper respiratory tract infection of viral origin, usually caused by a rhinovirus (up to 40% of colds), or by Coronaviruses (about 20%). These are the more common viruses, but there are more than 200 different viruses (some say as many as 700) that can cause the common cold. There are a huge number of different viruses from a number of different viral 'families' that cause cold symptoms. This is the main reason there is no vaccine for the common cold - there are simply too many different viruses to develop vaccines specific to each virus, and before a vaccine can be developed for a new viral mutation, it can mutate again.
, knihf
the rhinovirus duplicates only in higher primates such as humans...
1956
Live attenuated influenza vaccine (LAIV) is a type of influenza vaccine in the form of a nasal spray that used to be recommended to prevent influenza.
Like all influenza viruses it has a roughly spherical shape.
influenza vaccine
(1) Afluria (Pro) influenza virus vaccine, inactivated10(2) Fluarix Quadrivalent influenza virus vaccine, inactivated(3) Flublok Quadrivalent influenza virus vaccine, inactivated(4) Fluvirin (Pro) influenza virus vaccine, inactivated(5) Engerix-B hepatitis b adult vaccine(6) Flublok (Pro) influenza virus vaccine, inactivated(7)Zostavax (Pro) zoster vaccine live(8) Gardasil 9 (Pro) human papillomavirus vaccine(9) Flucelvax Quadrivalent influenza virus vaccine, inactivated(10) Shingrix (Pro) zoster vaccine, inactivated(13) FluMist (Pro) influenza virus vaccine, live, trivalent(12) Fluzone (Pro) influenza virus vaccine, inactivated
The equine Rhinovirus is a type of equine influenza caused by the equine herpes virus. It can cause severe flu like symptoms and even death.
influenza
One code is 90471. There is a 2nd code for the actual influenza vaccine, but we need to know the age of the patient.
Influenza A virus H5N1, is known as "bird flu". H5N1, is a subtype of the influenza A virus which can cause illness in humans and animals. A filtered and purified influenza A vaccine for humans is being developed.
Dr. Rosenow in 1918
Intramuscular.
Influenza vaccine, intramuscular
Adults should get seasonal influenza vaccine annually.