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If food has to be kept for more than two hours, it should be kept either very hot or very cool.

If cooked food is saved for another meal, it should be covered to keep off flies and insects and then thoroughly reheated beforebeing eaten.

Yogurt and sour porridge are good to use in meals because their acid prevents the growth of germs.

Raw food, especially poultry and seafood, usually contains germs. Cooked food can collect germs if it touches raw food. So rawand cooked foods should always be kept away from each other. Knives, chopping boards and surfaces where food is prepared should always becleaned after preparing raw food.

Breastmilk is the safest milk for infants and young children. Animal milk that is freshly boiled or pasteurized is safer thanunboiled milk.

Expressed breastmilk can be stored at room temperature for up to eight hours in a clean, covered container.

Special care should be taken with preparing food for infants and small children. Their food should be freshly made and not leftstanding, if possible.

Fruit and vegetables should be peeled or washed thoroughly with clean water, especially if they are to be given raw to babiesor small children. Chemicals such as pesticides and herbicides cannot be seen on fruit and vegetables but nonetheless can be dangerous.

Germs on food can be swallowed and cause illness. To protect food from germs:

  • food preparation surfaces should be kept clean
  • knives, cooking utensils, pots and plates should be kept clean and covered
  • cloths for cleaning dishes or pans should be washed thoroughly every day and dried in the sun. Plates, utensils and pans should be washedimmediately after eating and put on a rack to dry
  • food should be kept in covered containers to protect it from insects and animals
  • feeding bottles or teats should not be used because they can contain germs that cause diarrhoea unless they are cleaned each time withboiling water. Children should be breastfed or fed from a clean, open cup.

Washing hands

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Drinking fresh water

Families have fewer illnesses when they have an adequate supply of clean water and know how to keep it free of germs.

If the water is not clean it can be purified by boiling or filtering.

Clean water sources include properly constructed and maintained piped systems, tube-wells, protected dug wells and springs.Water from unsafe sources - such as ponds, rivers, open tanks and step-wells - can be made safer by boiling. Water should be stored in a covered containerto keep it clean.

Families and communities can protect their water supply by:

  • keeping wells covered and installing a handpump
  • disposing of faeces and waste water (especially from latrines and household cleaning) well away from any water source used for cooking,drinking or washing
  • building latrines at least 15 metres away and downhill from a water source
  • always keeping buckets, ropes and jars used to collect and store water as clean as possible by storing them in a clean place, rather thanon the ground
  • keeping animals away from drinking water sources and family living areas
  • avoiding the use of pesticides or chemicals anywhere near a water source.

Questions & Answers

Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
hi
Loga
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Health education course. OpenStax CNX. Feb 03, 2006 Download for free at http://cnx.org/content/col10330/1.1
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