Sunday, August 29, 2010
If I started Hepatitis B immunization and did not complete the course, what should I do ?
According to guidelines created by the Centers for Disease Control and Prevention (CDC) you do not have to restart the vaccine series if you received only one or two doses - even if it has been a few years since your last dose of the vaccine. You only need to complete the series by getting the remaining shot(s).
Labels:
Hepatitis B
Saturday, August 14, 2010
Recrudescence and relapse in Malaria
Recrudescence is a re-attack of malaria because of the surviving malaria parasites in red blood cells. Characteristic of P.malariae infections. This may be short term or delayed.
Relapse is a re-attack of malaria because of infection by the malarial parasites which were surviving in the liver (i.e. hypnozoites). This is usually a delayed feature.
Labels:
malaria,
recrudescence,
relapse
Vector competence and vectorial capacity
Vector competence refers to the ability of mosquitoes to receive a disease agent microorganism (arbovirus etc.) from the reservoir host and then later transmit the infectious agent to another susceptible host.
Vectorial capacity includes a number of factors like vector competence, mosquito population density, host preferences, biting rate, immunity of the mosquitoes etc.
To be an effective vector, mosquitoes must have a high vector competence and vectorial capacity.
Vectorial capacity includes a number of factors like vector competence, mosquito population density, host preferences, biting rate, immunity of the mosquitoes etc.
To be an effective vector, mosquitoes must have a high vector competence and vectorial capacity.
Labels:
malaria,
mosquito,
vector capacity,
vector competence
Wednesday, August 4, 2010
In infectious disease epidemiology; what is the difference b/w vehicle and fomite ?
A vehicle is a substance which can carry a microorganism into your body. e.g. air, water or food. A fomite is an object which is capable of retaining a microorganism, and may be a source of infection.
Tuesday, August 3, 2010
What are 'standards', e.g. as in Indian Public Health Standards (IPHS) ?
Standards are a means of describing the level of quality that health care organizations are expected to meet or aspire to.
In contrast to standards, 'norms' are the typical expected patterns of a particular group.
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