It is likely that, at some point in your life, your bed will become infested with bed bugs. This sounds far worse than it actually is and these small creatures rarely pose a threat to human beings. You may get bitten by one however the reaction will be no worse than a red line on the place where the bite is as well as the occasional itch or flaky skin. In some rare cases there can be a more serious reaction however this does not happen very often and the bugs themselves do not carry any diseases or infections with them so there is little need to worry on that count.
What is true is that you should try and get rid of them if they do appear as, after all, it isn’t a nice prospect in sharing a bed with these little creates. To kill bed bugs you do not have to go to any extreme lengths and a spray will generally do the job without any troubles. It is not enough to just steam and wash the sheets and duvet etc… because the bugs themselves tend to live on the actual mattress and therefore this is unlikely to have much effect on them. However the spray will effectively kill the bugs and the eggs too. In addition to this you can take steps to prevent them from appearing in the first place.
A mattress encasement will protect your mattress from being infected by bed bugs and is probably the best and more straightforward way of preventing them from appearing. Even if they do happen to appear then, as we have already mentioned, there is no significant risk however it is always best to eradicate them and ensure that they do not come back to your bed again.