Some of the factors that determine the extent and severity of microorganisms are:
- Infectivity. The infectivity of an organism reflects the relative ease with which microorganisms establish themselves in a host species.
- Virulence. The virulence of an organism reflects the relative severity of disease produced by that agent.
- Toxicity. The toxicity of an organism reflects the relative severity of illness or incapacitation produced by a toxin.
- Pathogenicity. This reflects the capability of an infectious organism to cause disease in a susceptible host.
- Incubation Period. A sufficient number of microorganisms must penetrate the body to initiate infection (the infective dose), or intoxication (the intoxicating dose).
- Transmissibility. Some biological organism can be transmitted from person-to-person directly.
- Lethality. Lethality reflects the relative ease with which an organism causes death in a susceptible population.
While some of these have yet to be determined w.r.t. COVID 19, looking at the Kirkland nursing home infection can illustrate.
The Lethality of that susceptible population may be higher due to their decreased immune responses whether from age, chronic diseases, etc. In general, nursing home personnel do not use the usual personal protective devices like gloves in the same situations that hospital staff use them. Plus these are low-wage workers who come to work possibly with early signs because they must maintain an income.
The Incubation Period and ability of the virus to Transmit while staff are asymptomatic and the relative ease of Infectivity on those highly susceptible population through respiratory or contact as the virus outside of a host impacts interventions to contain its spread.
Should the causative organism have the ability to replicate quickly with community spread through hosts with no or minimal symptoms before diagnosis through available testing are factors that are constraints on containment and isolation.
I understand some staff at Life Care Center have now been diagnosed with it after symptoms have now appeared. Also, in the case of a cancer hospital, dialysis center or in individuals in the community with lower immune responses, the lethality would be higher.
Video-conferencing with physicians, if it's available, in case of symptoms and the availability of test kits for home diagnosis could help prevent the spread within an urgent care or emergency department.
- Infectivity. The infectivity of an organism reflects the relative ease with which microorganisms establish themselves in a host species.
- Virulence. The virulence of an organism reflects the relative severity of disease produced by that agent.
- Toxicity. The toxicity of an organism reflects the relative severity of illness or incapacitation produced by a toxin.
- Pathogenicity. This reflects the capability of an infectious organism to cause disease in a susceptible host.
- Incubation Period. A sufficient number of microorganisms must penetrate the body to initiate infection (the infective dose), or intoxication (the intoxicating dose).
- Transmissibility. Some biological organism can be transmitted from person-to-person directly.
- Lethality. Lethality reflects the relative ease with which an organism causes death in a susceptible population.
While some of these have yet to be determined w.r.t. COVID 19, looking at the Kirkland nursing home infection can illustrate.
The Lethality of that susceptible population may be higher due to their decreased immune responses whether from age, chronic diseases, etc. In general, nursing home personnel do not use the usual personal protective devices like gloves in the same situations that hospital staff use them. Plus these are low-wage workers who come to work possibly with early signs because they must maintain an income.
The Incubation Period and ability of the virus to Transmit while staff are asymptomatic and the relative ease of Infectivity on those highly susceptible population through respiratory or contact as the virus outside of a host impacts interventions to contain its spread.
Should the causative organism have the ability to replicate quickly with community spread through hosts with no or minimal symptoms before diagnosis through available testing are factors that are constraints on containment and isolation.
I understand some staff at Life Care Center have now been diagnosed with it after symptoms have now appeared. Also, in the case of a cancer hospital, dialysis center or in individuals in the community with lower immune responses, the lethality would be higher.
Video-conferencing with physicians, if it's available, in case of symptoms and the availability of test kits for home diagnosis could help prevent the spread within an urgent care or emergency department.
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