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02.18. You are studying population of wild coyotes and notice that every three years there is an epidemic of a bacterial disease. Which of the following best explai...

Question

02.18. You are studying population of wild coyotes and notice that every three years there is an epidemic of a bacterial disease. Which of the following best explains this periodic cycling of the disease?Hcw CasesNew coyotes are continuously born into the population_Coyotes are dying from other causes over lirne.During an outbreak; the proportion of coyotes who are sick with lhe disease slowly falls as they recover:Coyotes from other populations, who have already caught and recovered from the di

02.18. You are studying population of wild coyotes and notice that every three years there is an epidemic of a bacterial disease. Which of the following best explains this periodic cycling of the disease? Hcw Cases New coyotes are continuously born into the population_ Coyotes are dying from other causes over lirne. During an outbreak; the proportion of coyotes who are sick with lhe disease slowly falls as they recover: Coyotes from other populations, who have already caught and recovered from the disease immigrate into the study population; Suhimlt Mev Cases 02.19. Two directly transmitted viral diseases have the same critical Immunization threshold (p c) even though thelr effects on thc host are different: Which of thc following differences botween tho two diseases could Iead to the same critical immunization threshold? One disease has higher transmission rale and longer recovery period than the other: Ona disease has lowor transmission rale and llonger rocovery period Ihan Ihe olher One disease has lowor (ransmission ralta and shorter rocovary period Ihan Ihe other: For ona dilseaso; Ihe racovery period long; for Ihe olher; no one recovors, attttle



Answers

Refer to the following data set: According to the U.S. Department of Health and Human Services, herd immunity is defined as "a concept of protecting a community against certain diseases by having a high percentage of the community's population immunized. Even if a few members of the community are unable to be immunized, the entire community will be indirectly protected because the disease has little opportunity for an outbreak. However, with a low percentage of population immunity, the disease would have great opportunity for an outbreak." Suppose a study is conducted in the year 2016 looking at the outbreak of Haemophilus influenzae type $b$ in the winter of 2015 across 22 nursing homes. We might look at the percentage of residents in each of the nursing homes that were immunized and the percentage of residents who were infected with this type of influenza. The fictional data set is as follows. What is the relationship between the variables $\%$ residents immunized and \% residents with influenza? a. Create a scatterplot to illustrate the relationship between \% residents immunized and \% residents with influenza. b. What is the correlation coefficient between $\%$ residents immunized and \% residents with influenza? c. Describe the strength of the relationship between \% residents immunized and \% residents with influenza. d. What is the equation of the best fit line that describes the relationship between \% residents immunized and \% residents with influenza? e. Could you use the best fit line to produce accurate predictions of $\%$ residents with influenza using $\%$ residents immunized?

When the UV radiation damages the Cl protein, it stopped repressing the C. R. O. Gene. The C. R. O. Gene is the gene that switches the bacteria Feige into the lyric lifecycle. Ah The crow gene also further represses the D. L. G. Despite the fact that you could reverse or turn off the using lamp, this process has already started and the subsequent increase of crow protein within the host cell will result in the production of new virus particles and the ultimate license and release of these particles.

Hello, everyone. I hope all is well today. I'll be helping you with the 50th problem of the Chapter 21 problem set. So a is asking Explain why retro retro, um, explain why retroviral DNA, rather than genomes of single stranded or double stranded DNA of or single stranded RNA viruses are found in the host in a. So this answer is retroviral D n A. Is when a retrovirus inserts a copy of itself in the DNA of host cells. The body reacts to this by utilizing the immune system to kill all of the viruses. So those types of virus will not be alive and the retroviral DNA will only be left. Which brings us to be, which is explained in terms of, ah, selection how viral genetic information that no longer replicates the virus is maintained by the host. So basically that the DNA is not harming homey of spaces and it is not causing any disruption. Then there's no reason for it to be spiced out by any spices. Soames. Additionally, the body will change and edit the d n A. When the parts are being harmful to the host. Which brings us to see which says explain how this up, endemic of the stimulus above, could have originated in the cat population. So see says, this could, I would explain, as this could have originated in the cat population, because although the two species diverge, there will still be some common proteins, which means that there will be some type of similar receptors that the parvo virus could have acted upon and then it could have been transmitted. And although the virus may not be harmful, toe all dogs, maybe some dogs, some species, my have trouble with it because of the similar receptors. So I hope you found this helpful and I'll be of a great day. Thank you.

In this question. We're looking at a mystery virus outbreak of human encephalitis, and what we have to work with is we have a bunch of genetic samples from some dead human patients. Mosquitoes are dead horse and some birds. And our first question is, did all of these creatures die of the same disease? Well, if we have a look at our class diagram, we can see that all the samples were very closely related to each other, much closer than their related to any of the virus. And they are more closely related to a Western al variants of the Israeli variants. But that is really very physical Romanian various. So we can we can definitely say, Um, yes, we will died of some disease and this leads into B. And did they die of the ST Louis encephalitis virus, which was the initial her suggestion for the course. But looking at this, we can see it is most closely related to the West Nile virus, specifically an Israeli sample. And in this clever Graham, it is within the West Nile virus group. Um, so we're gonna say it's not setting the way encephalitis. It's most likely or smell virus. And finally, for C Can we see how the disease is spread from this program? Um, if we have look at our samples, they are all on the same little branch. There are no further branches off to show closer or further genetic relations between samples. All we have is that all these samples closely related. We don't have anything more than that. We don't know if any two samples closer related. Uh, so we cannot comment on the spread. If hypothetically, um, the horse was in its own hole, played with humans, we could say that it spreads from horse to human vice versa. But I'm saying there's very no further branches, so we cannot make any comments on which creature gave the virus to any of the others.

Given functional apathy equals toe accepted. Three multiplied by 1.0 to wait to the power people and he'll be equals Toe 54,700 in to the power minus B minus 200 all square divided by 75 about judo. Also, we are provided with a table in this question. Here is the table. Now we will change the table. They will put equals to zero equals to zero corresponding toe against 18 14 Now we will change the table accordingly. The new table is as follows here we will like be in their new cases people to zero new cases five Musics at people's to continue your face is 1 to 89 active was six new cases 347 and people 24 new cases 9597 At people's toe, 112 new cases Burnett 817 People's 21 14 New cases is 33,000 and 35. That he was 216 years. Your visit is in cases are 47,001 night. This question consist of three parts. We will start with party in party. We will represent the graphs off the to function and be stable. Cherries are craft. This is our accept things. This is our boxes. This curve represents function fst and this could represent function. Tee off. Now we will do part mhm in bad. We we have to return my in which function better Motors parks Prediction. The function g o t Better models parts production. This is because it's graph is closer to the graph that shows as prediction. Now we will do party in this part. We have to determine the date on this the number of new cases he now considering the graph of the function g o p BC that the number off new cases speak. That equals to 200. This means we have 200 minus 1. 68 equals two 32 days upset January 27. So that date will be February 28. Thank you


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