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What are the stages of pathogen development?
Attachment: Pathogen attaches to host cells. Invasion: Pathogen enters host cells and starts to replicate. Evasion: Pathogen evades host immune response. Spread: Pathogen spreads to other tissues and host organisms. Damage: Pathogen causes damage to host tissues and organs.
What is an avirulent pathogen?
An avirulent pathogen is a pathogen that is unable to cause disease in its host. This may be due to mutations that have reduced its ability to infect or harm the host, making it less pathogenic compared to a virulent pathogen.
In what three main ways do pathogens affect their host?
A pathogen (being something living from the goodness a body example: a tic living from a dog) 3 ways it can effect the host is: * disease of the host as the pathogen carried disease. * malnutrition of the host as the host can become weak due to the pathogen surviving from the hosts body. Example would be iron deficiency in the host, due to the pathogen using the hosts blood to live on * finally death of the host.
What the intermediate host of the tapeworm?
Cow: Intermediate host to the larval stages of beef tapeworm (Taenia saginata)
How is the pathogen transferred to the host?
The pathogen can be transferred to the host in a number of ways, from contact to the transfer of bodily fluids. If someone sneezes that can be a way of contracting the pathogen in the air, for you may breathe it in. There are also waterborne diseases.
What is a cercaria?
a free-swimming larval stage in which a parasitic fluke passes from an intermediate host (typically a snail) to another intermediate host or to the final vertebrate host
What are three things that can cause disease?
One needs a pathogen , a host and an environment conducive for the pathogen to infect the host.
Why is it better for a pathogen not to kill it host?
when the host dies all it nutrients will go too and the parasite will get nothing so it will die if it doesn't get a new host
What is a true pathogen and an opportunistic pathogen?
True Pathogen- are capable of causing disease in healthy persons with normal immune defenses ex. influenza virus, plague bacillus, and ect Opportunistic pathogen- cause disease when the host's defenses are compromised or when they grow in part of the body that is not natural to them
What is A pathogen's entry into a host's body tissue called?
Infection
What is an intermediate host?
http://tinyurl.com/gdhosting
What are the hosts of the trematoda?
Intermediate host - snail definitive host - cattle/sheep
