Sales: Sales: Support: Support:
Academic writing services  
Custom written essay Book report Research paper Dissertation Resume and CV Editing and proofreading  
main menu
By ordering custom paper you get
  • 24/7 Support
  • Over 100 professional US Writers
  • 300 words per page
  • Flexible discount system
  • FREE revision (within 2 days)
  • Anti-Plagiarism Software Check
we accept
sample essays
Accounting Essays
Admission Essays
Analysis Essays
Art Essays
Biography Essays
Biology Essays
Book Review Essays
Business Essays
Case Studies Essays
Cause and Effect Essays
Character Analysis Essays
Communication Essays
Communication and Media Essays
Compute Technologies Essays
Consideration Essays
Controversial Essays
Description Essays
Economics Essays
Education Essays
Evaluation Essays
Explanation Essays
History Essays
Job Essays
Law Essays
Management Essays
Medicine Essays
Music Essays
Personal Essays
Personal Experience Essays
Persuasive Essays
Persuasive Speech Essays
Philosophy Essays
Political science Essays
Politics Essays
Proposal Essays
Psychology Essays
Reflective Essays
Religion Essays
Research Essays
Response Essays
School Essays
Science Essays
Sociology Essays
Technology Essays
World Literature Essays
A Major Limitation essay
← Great Plague of LondonThe Ancient Greeks →

A Major Limitation. Custom A Major Limitation Essay Writing Service || A Major Limitation Essay samples, help

A major limitation of the discussed model is that it assumes that a second or subsequent epidemic cannot occur. The decline in the epidemic curve shows that the pathogen is running short of susceptible people to infect, or there is an increase in the rate of treating the infected people, introduction of a vaccine or people have turned out to be immune. To have a new infection in the future, it means that we must have a source of susceptible people.

An expansion of the SIR model to include births per unit time and mortality rate denoted by B and µ respectively brings the new equations.

Through out the formulation of this model, it has been an assumption that the transmission rate β is a constant. A careful scrutiny of this reveals that the transmission rate is a product of the probability that a susceptible person when contacted by an infected is infected and the rate of contact. However, contact rate among individuals is not constant all through; it varies with season and place. Thus, it is right to infer that the transmission rate is not constant as held.

Fig 2 is a representation of the data on reported cases on measles infection in New York City over a period of 3 months. Measles has been in New York City for decades, and shows no sign of extinction. In the year 1961, measles was already in the city, and thus the epidemic did not start simply due to an infected individual thus the assumptions that I (0) = 1 and S (0) = N do not hold.

The introduction of the birth rate in the SIR model gives a clearer understanding of the same. The changes in the rate of birth have similar effects to changes in the rate of transmission. Thus, equivalence is essential as it makes the explanation of historical case report data of different areas possible. It is deducible from this report that successful mathematical modeling for biological systems is systematic. Starting from simple steps we can make a model of the present information. Where this does not capture fully the present phenomena, additional details are added to the model.

In modeling recurrent epidemics, Kermack and McKendrick models, which are an SIR model, are indispensable. These models make not only help in the data analysis, interpretation, but also in the understanding. Starting from the data collection, the SIR model helps in making a model that will enable graphing, making it presentable. The model is made initially from the simple data available. The model also makes addition of more biological data possible, thus fully capturing the phenomena. Despite their help in making epidemic analysis possible, they are based on axioms that rarely hold. Many of the assumptions that are the fabric holding the model have been proven useless in other epidemics, such as the Measles epidemic in New York.

A Major Limitation. Custom A Major Limitation Essay Writing Service || A Major Limitation Essay samples, help

Order Now
Order nowhesitating

Related essays

  1. The Ancient Greeks
  2. Chief Justice Marshall
  3. Great Plague of London
  4. Top Management Vision

order now

Order now
why choose us
96% of satisfied returning customers
24/7 customer support
A wide range of services
Up-to-date sources
100% privacy guaranteed
MA/PhD writers
Custom written papers only
Free plagiarism report
Free revision (within 2 days)
Free extras by your request
Direct communication with a writer
Are your writers qualified for the custom writing?
How quick can my order be accomplished?
Is it legal to buy custom essays, term papers or book reports from your company?
Are essays offered by your company truly custom-written?
Is it safe to buy from
How secure is the payment system of your company?
Can I submit custom essays or term papers done by your company as my own?
How can I contact your company if I've got problems with my ordered paper?

Finally, I've found the real custom writing service . My grades are saying "Thank you, it's been a pleasure to work with you."

Jamal, South Africa

I can't believe you finished my essay under such a short deadline! You saved me from a disaster once again. You guys deliver exactly what you promise. I'll be back. That's for sure!

William H , Kansas, US

contact us
Toll free for US & Canada only. International callers are charged for outgoing calls.

Our phone numbers: provides custom term paper writing/rewriting services inclusive of research material for assistance purposes only. The term papers should be used with proper reference and are not meant to replace actual assignments.

Get 15% off your first custom essay order

Order now

from $12.99/PAGE