Diseases Flashcards

(57 cards)

1
Q

What’s the latin word rabies mean?

A

Madness

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is rabies?

A

A fatal disease caused by Rabies virus (Lyssavirus rabies).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What’s the virus that causes rabies?

A

Lyssavirus rabies.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

On what continent is rabies not there?

A

Antarctica.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the sources of rabies in humans:

A

bats, monkeys, raccoons, foxes, skunks, cattle, wolves, coyotes, cats, and mongooses

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Where is the rabies virus predominantly located in infected animals?

A

Saliva and nervous tissue (brain and nerve cells).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How is the rabies virus transmitted most often?

A

Bites or scratches.

Saliva from the infected animal can also transmit rabies if the saliva comes into contact with eyes, mouth or nose.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What animals are responsible for 99% of human rabies cases?

A

Dogs are responsible for rabies transmission.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What behavioural patterns do animals with “dumb” rabies exhibit?

A

Appear depressed, lethargic, and uncoordinated.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are some signs of rabies in dogs?

A

Excessive salivation,
lethargy,
change in behaviour,
aggression,
hallucinations,
paralysis,
sensitive to stimuli

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What was rabies historically referred to and why?

A

Hydrophobia (fear of water), because its victims panic when offered liquids to drink.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the usual incubation period for rabies?

A

2-3 months, but may vary from one week to one year.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Once rabies’ clinical symptoms appear…

A

it is virtually 100% fatal.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

When does death occur after the first symptoms of rabies?

A

2 to 10 days after first symptoms.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are some rabies symptoms in humans?

A

Hallucinations,
excessive salivation,
light sensitivity,
hydrophobia,
insomnia,
aggression.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

How is rabies treated?

A

-Animal bites and scratches should be immediately and thoroughly washed with soap and water for at least 15 minutes.

-Medical advice should then be sought to ensure the appropriate treatment. This could include evaluating risk of wound infection and offering rabies vaccination.

-Before the decision is made to treat an exposed person, the exposing animal is evaluated to determine if it has rabies.

-Wild animals must be euthanized, and their brains are tested for rabies virus. Dogs and cats are usually confined and observed for signs of rabies.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

How is rabies prevented?

A

-29 million people are given rabies vaccine annually.
-KEEP DISTANCE FROM WILDLIFE.
-Vaccinate dogs.
-Public education on dog behaviour and bite prevention.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Who developed the rabies vaccine?

A

Louis Pasteur and Emile Roux in 1885.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

How is the rabies vaccine initially given?

A

3 doses over 28 days.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

How many rabies deaths are there annually?

A

59,000.

40% of them are children under the age of 15.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is ringworm/dermaphytosis?

A

A common fungal infection NOT CAUSED BY WORMS.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

How many types of fungi can cause dermaphytosis?

A

40

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

How can dermaphytosis be passed on?

A

Close contact with:

-infected person/animal

-infected objects, such as bedsheets, combs, or towels.

-infected soil (LESS COMMON)

24
Q

What are ringworm risk factors:

A

using public showers;
contact sports (wrestling);
excessive sweating;
contact with animals,
obesity;
poor immune function

25
How many days does it take for ringworm symptoms to show after exposure?
4-14 days
26
What does ringworm look like?
The main symptom is a rash. May look red or darker than the surrounding skin tone. Rash is usually ring shaped, but may look different on your face, neck or scalp. May be scaly, dry, swollen, or itchy. Can appear on the body, including the scalp, and groin.
27
How is ringworm treated?
Antifungal creams such as **clotrimazole**, **miconazole.** If scalp is involved, antifungals by mouth such as **fluconazole** maybe needed.
28
How is ringworm prevented?
Keeping the skin dry; Not walking barefoot in public; Not sharing personal items.
29
How to stop ringworm from spreading?
Start treatment early, wash towels and bedsheets regularly, keep skin clean, wash hands after touching animals/soil
30
What is the name of the tetanus bacteria?
Clostridium tetani.
31
How is tetanus caused?
The disease is actually caused by the spores of the bacteria which can be found everywhere in the environment.
32
At what age is the death risk of tetanus highest?
70 years or older
33
Where can Clostridium tetani spores be found?
Soil, ash, intestinal tracts/feces of animals and humans, surfaces of skin, rusty tools like nails.
34
What are the Clostridium tetani spores resistant to?
Heat and antiseptics - THESE SPORES CAN SURVIVE FOR YEARS.
35
How to Clostridium tetani spores enter the body?
Through a wound or a break in the skin
36
What is the process of tetanus getting into the body?
Spore enters body. **Germinates under anaerobic conditions**(lack of oxygen). Eventually forms a **potent toxin.** Toxin **enters blood stream**, *spreads* throughout body. Toxin acts on *nervous system* (**brain, spinal cord, and nerves connected to muscles**)
37
What is tetanus' incubation period?
3-21 days. Average 8.
38
What does tetanus' incubation period rely on?
The further away the injury site is from the brain and spinal cord, the longer the incubation period.
39
What does a short incubation period for tetanus usually result in?
More severe disease. Higher chance of death.
40
What symptoms does the tetanus toxin cause?
Jaw stiffness/Lock jaw; Stiff of back, neck, and extremities like arms and legs; Difficulty swallowing; Muscle rigidity in abdomen; Fever and sweating; Elevated blood pressure
41
How is tetanus treated?
-Care in the hospital; -Immediate treatment with medicine; -Aggressive wound care; -Drugs to control muscle spasms; -Antibiotics; -Tetanus vaccination
42
Are people who recover from tetanus immune?
No, they do not have natural immunity and can be infected again; therefore, they need to be immunized.
43
How can tetanus prevented?
Immunization through TTCV (tetanus-toxoid-containing vaccines)
44
What is Malaria caused by?
Plasmodium species.
45
How many species of Plasmodium species are there?
156
46
What are the four species that are considered the true parasites of humans?
P. falciparum; P. vivax; P. ovale. P. malariae.
47
What 2 hosts does the malaria parasite life cycle involve?
Female anopheles mosquitoes; humans.
48
Without treatment, what can malaria cause?
Brain damage, organ failure; death.
49
Where is malaria?
Past: endemic in North America, Europe, parts of North Asia. Now: Restricted to tropical and subtropical areas ad altitudes below 1,500m.
50
How can the malaria distribution be affected?
By climate change and population movements.
51
How does malaria get into the body?
Spreads thru the bite of an infected female Anopheles mosquito. They become infected when they feed on the blood of a person already infected with malaria. Once the infect mosquito bites a person, the Plasmodium parasites enter the bloodstream and travel to the liver. There, they multiply, and eventually enter the bloodstream again, infecting red blood cells.
52
When do malaria symptoms usually appear?
A week or a month after you're infected. However, some people don't feel sick for a year or longer after a mosquito bite. Sometimes, people can have symptoms again years after the intial infection.
53
What is malaria's long incubation period and ability to recur caused by?
Plasmodium parasites can remain dormant in the liver. Recurrence may also result from reinfection or incomplete infection.
54
Symptoms of malaria?
Fever and sweating; Chills that shake ur whole body; Headache and muscle pains; Fatigue; Chest pain.
55
How is malaria treated?
Oral drugs for mild cases; Intravenous drugs for severe cases; Vaccines still in development and testing phase;
56
What are some Antimalarial drugs?
Chloroquine; Doxycycline; Quinine
57
How to prevent malaria?
If travelling to an area where malaria is common, doctors can prescribe antimalarial medications to take before, during and after. (Note: DIFFERENT DRUG MUST BE TAKEN FOR TREATMENT) Precautions: Mosquito repellent; Mosquito netting over beds; Screens over windows and doors; Wear long-sleeves.