NOTES
cinefilm intertitles in italics
descriptions normal
voice over in bold

FILM SUMMARY
The summary is in minutes and seconds. Formats held: black and white 16mm film with sound, SP Betacam, Digital Betacam, Master Preservation Time Coded DVD, Master Preservation DVD, Access Time Coded DVD and Access DVD.

Summary (Time Coded): Taken from Access DVD 3 (AA 872/1/2/6)

01:31:23 Cinefilm commences.
Cinefilm intertitle: THE SCABIES MITE

01:40:15 Cinefilm intertitle:
PHOTOGRAPHY
FRANK A. GOODLIFFE
(SCIENCE FILMS LIMITED)
EDITING
BYRON PICTURES LTD.
A
MINISTRY OF INFORMATION FILM
FOR
THE MINISTRY OF HEALTH AND
DEPT. OF HEALTH FOR SCOTLAND

01:49:10 Cinefilm intertitle:
Scabies is a disease caused
by the invasion of the
cuticle of man by the
parasite Sarcoptes Scabiei.

02:01:19 Voice over commences. View of scabies mite.
The life history of the parasite which causes scabies is best studied by beginning with the newly fertilised female which stage causes infection and the disease to spread.

02:12:16 Diagram of a scabies mite with a 200 micron scale at the top.
Here she is.

02:15:04 The same diagram as previous of a scabies mite but the word 'JAWS' has been added near the jaw.
Note the jaws, the two anterior pairs of legs which end in suckers

02:17:16 The same diagram as previous of a scabies mite but the word 'LEGS' has been added near her anterior legs.
and the two pairs of hind legs ending in

02:20:18 The same diagram as previous of a scabies mite but the word 'LEGS' has been added near her hind legs.
bristles. She is about 1/60th of an inch in length.

02:27:17 View of scabies mite crawling over skin
She walks on the skin at the speed of up to an inch in a minute. She walks about seeking for a site to burrow and they easily get onto the skin of a second person in contact with the case of scabies.

02:40:19 View of scabies mite on clothing
Or she may get onto the clothing. But few parasites remain here as they are attracted by the warm skin and return to it.

02:48:07 View of scabies mote on skin.

02:56:20 View of scabies mite digging into skin.
When she has found the favourable site, she starts to dig in using her jaws and the cutting blades on the elbows of her front limbs. Digging takes about an hour.

03:11:10 View of scabies burrowing into skin.
After she has dug in she burrows parallel with the surface at a rate of up to ½ centimetre a day. The mite doesn't normally leave the burrow

03:25:03 A doctor holds a reclined patient's arm steady, places a magnifying eyeglass in left eye and commences to dig the scabies out with a needle.
but maybe scratched out by the finger nails or dug out with a needle.

03:28:08 Close-up of needle removing eggs from skin.

03:34:17 View of doctor with his magnifying eyeglass holding the patient's hand and removing the eggs.

03:36:21 Close-up of the doctor's hand removing an egg on the patient's hand with a needle.

03:39:20 Close-up of needle scratching the skin.

03:49:22 The doctor removes the egg from the needle and places it oto a glass microscope slide.

03:55:18 Close-up of two scabies mite's eggs on a needle.

03:59:18 Close-up if three scabies mite's eggs on a needle tip.
Eggs are removed in the same way. They are delicate and easily damaged.

04:09:07 A serial section showing the burrow. An arrow points first to the malpighian layer and the dermis, secondly to the burrow, thirdly to the upper layer and finally the arrow moves from the upper layer to the burrow.
This serial section shows the burrow. The Malpighian layer and the dermis are never invaded. The burrow is confined to the upper horny layer of the skin. The arrow shows the burrow and the mite.

04:24:20 View of a scabies mite with four eggs.
Inside the burrow, she lays up to 4 eggs a day. She may tunnel for 6 weeks and lay up to 150 eggs.

04:34:14 View of serial section. An arrow points to each egg.
The eggs are firmly fastened to the lower side of the burrow and being thin shelled are seldom removed undamaged.

04:44:00 View of hatched larvae on skin.
The eggs are firmly fastened to the lower side of the burrow and being thin shelled are seldom removed undamaged.

04:55:06 Arrow points oto larvae crawling on the skin.

05:04:10 The larva crawls over the skin and finds a hair follicle.
The larva is usually found dug into a hair follicle where it finds food and protection. After 2 moults its life history is practically complete. We get either the male

05:29:06 Microscope image of a larva.
distinguished by its smaller size and suckers instead of bristles on his last pair of legs or the

05:36:12 View of one larva and then a second. The first is an immature female and the second has increased in size.
immature female which on fertilisation increases to its mature size.

05:51:01 Diagram of an egg
The whole life history may then be summarised diagrammatically: first the egg

05:58:15 The same diagram as previous but a larva has been added.
then the larva

06:00:15 The same diagram as previous but a nymph has been added.
the nymph

06:03:12 The same diagram as previous but an adult male has been added.
the adult male

06:05:20 The same diagram as previous but an immature female has been added.
the immature female

06:09:21 The same diagram as previous but a fertilised female has been added.
and finally the fertilised female. It is this last stage which usually is responsible for

06:14:14 The same diagram as previous but with an egg and fertilised female only.
transmission and spread.

06:16:08 Cinefilm intertitle:
LIFE CYCLE
TAKES
10-14 DAYS

06:20:24 View of a scabies mite crawling around.
Only a very few of the eggs ever reach the stage of fertilised females. As with most parasites there is a great wastage. Namely because the males and females never succeed in meeting. The adult female mites are not found scattered about man's body in a random way.

06:38:08 View of vertical bar graph (7 vetical x 10 horizontal) with:
DISTRIBUTION
OF BURROWS
printed in the centre. The vertical axis shows percentage, beginning at 0 and ending at 70.

06:41:03 The same bar graph as previous without the centre 'DISTRIBUTION OF BURROWS'. The graph slowly fills listing human body parts on the horizontal axis that are affected by burrowing. In the first instance the bar graph shows: 62.5% wrist and fingers; 12% elbows; 11% feet; 10% genitals, 9.5% etcetera and in the second grab shows: 60% WRISTS AND FINGERS.
The greater number are restricted to the hands and wrists and the majority of the remainder on a few well-defined sites. This refers to egg laying females in burrows.

06:59:23 View of a left sided torso of a man
Immature stages maybe more widely dispersed and their presence may give a generalised reaction.

07:05:15 The same view as previous but with a pencil circling round the neck, shoulder and back area.

07:16:09 View of needle piercing the skin and bursting a vesicle.
The mites themselves give rise to vesicles which are easily burst. Bacteria will then readily invade the skin.

07:26:20 View of a scabies mite crawling.
This then is the life story of the Sarcoptes, a troublesome parasite to the cause of discomfort and more serious skin infections.

07:40:09 Cinefilm intertitle: THE END

07:46:12 Cinefilm ends

INVENTORY ITEMS:

AA 872/1/2/1
Format: 16mm, positive, black and white, sound
Duration:
Transfer Date:
Generation:

AA 872/1/2/2
Format: SP Betacam, Master Preservation Copy
Duration: 7 minutes; 47 seconds
Transfer Date: July 2005
Generation: Copy of AA 872/1/2/1

AA 872/1/2/3
Format: Digital Betacam
Duration: 7 minutes; 47 seconds
Transfer Date: July 2005
Generation: Copy of AA 872/1/2/1

AA 872/1/2/4
Format: Time coded DVD 1, Preservation Copy
Duration: 7 minutes; 47 seconds
Transfer Date: July 2005
Generation: Copy of AA 872/1/2/1

AA 872/1/2/5
Format: DVD 2, Preservation Copy
Duration: 7 minutes; 47 seconds
Transfer Date: July 2005
Generation: Copy of AA 872/1/2/4

AA 872/1/2/6
Format: Time coded DVD 3, Access Copy
Duration: 7 minutes; 47 seconds
Transfer Date: July 2005
Generation: Copy of AA 872/1/2/4

AA 872/1/2/7
Format: DVD 4, Access Copy
Duration: 7 minutes; 47 seconds
Transfer Date: July 2005
Generation: Copy of AA 872/1/2/4