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Courtesy
of The CDC:
Worldwide,
rats and mice spread over 35 diseases.
Rodent-borne diseases are spread directly
to humans through bite wounds, consuming
food or water that is contaminated with
rodent feces, coming in contact with
surface water contaminated with rodent
urine, or through breathing in germs that
may be present in rodent urine or
droppings that have been stirred into the
air (a process known as “aerosolization”).
Diseases from rodents are also spread
indirectly to humans by way of ticks,
mites, and fleas that transmit the
infection to humans after feeding on
infected rodents. In some cases, the
rodents are the reservoirs (carriers) of
the diseases, while in other cases the
ticks, mites, or fleas act as the disease
reservoirs.
View a list
of some of the diseases that are
transmitted directly and indirectly from
rodents to humans:
Diseases
Directly Transmitted by Rodents
Diseases
Indirectly Transmitted by Rodents
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ROOF RAT (Rattus
rattus)
Biology
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Length: 6 to 8
inches
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Weight: 5 to 12
ounces
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Normally brown to
gray-black in color
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Tail is longer
than head and body combined.
-
Droppings are up
to ½ inch long, spindle shaped
with pointed ends.
Distribution/Habits
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Found worldwide
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Prefer to nest in
upper parts of structure, such as
roof tops
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Will nest outdoors
in higher areas, such as tree
tops, or will nest in burrows in
or under vegetation around
buildings
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Will shy away from
new objects in their established
route to food and water sites.
DEER MICE (Peromyscus
maniculatus)
Biology
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Also called
white-footed mouse
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Color varies from
gray to red-brown.
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The underbelly and
feet are white.
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Large eyes and
ears
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Tail is covered
with short fine hair and is
distinctly bi-colored, dark on top
and white on bottom.
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Deer Mice are the
primary vector of hanta viruses.
Distribution/Habits
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Found throughout
the United States with the
exception of some Southern and
Southeastern parts
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Nocturnal and feed
primarily at night
Deer
mouse (Peromyscus maniculatus)
Photo
Courtesy-CDC
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They nest in small
shallow burrows, hollow stumps, or
beneath small fallen logs, and
will occasionally
infest homes or
other buildings.
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Normally 3 to 4
litters a year, producing 3 to 6
young per litter.
HOUSE MOUSE (Mus
musculus)
Biology
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Length: 2 ½ to 3
½ inches
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Tail is longer
than body.
-
Large ears, small
eyes
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Color varies from
light brown to dark gray on top
with a lighter color on belly.
Distribution/Habits
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Found throughout
the United States and the world
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Nibbles when
feeding
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Will gnaw on
almost anything
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Nests in various
materials such as insulation.
NORWAY RAT (Rattus
norvegicus)
Biology
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Length: 7 to 9 ½
inches
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Weight: 7 to 20
ounces
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Normally brown
with some black hair
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Tail is shorter
than head and body combined.
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Droppings are up
to ¾ inch long with
capsule-shaped, blunt ends.
Distribution/Habits
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Found worldwide
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Primarily
nocturnal
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Prefer to nest in
burrows in soil by streams, lakes,
rubbish etc. In structures, they
prefer to be in ground or lower
levels.
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Will travel up to
150 feet from their nesting site
to obtain food or water.
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