Infections like chlamydia you don't know are there until you look for them.

In Hull, when we started the screening test

where you can come along and pee in a pot,

we've discovered that one in eight teenage girls in Hull that are tested

have chlamydia, and about one in six boys.

I know it's a sexually transmitted disease.

You get it through having unprotected sex.

I know that the levels of it in Hull are quite high.

You can have chlamydia for up to five years and not know.

It's a bacteria so your body can build up its own immunity to it to a degree.

To begin with it's silent,

but if it stops being silent and starts to show that it's there,

that's when it may be causing some damage.

It can show a greeny discharge,

which anybody is then alerted to there's something wrong.

Pain during sex, pain after sex,

bleeding in between your periods, abdominal pain

and pain when you go for a wee.

If, however, it gets into the pelvic organs,

and we call that pelvic inflammatory disease,

that really worries us because it's associated with infertility

and not being able to get pregnant.

Nowadays if you have an STI you go and get it cleared up and you're fine.

Like getting a cold.

Chlamydia's a germ which only survives in body fluids,

so it can only be transmitted by very intimate contact, sexual contact.

You can also get it from oral sex and you can get it in your eyes

and it can be passed on to a baby at delivery.

People really aren't aware of these facts

and if they were, I'm sure more people would get tested.

The good news is that people are coming along and being tested.

Treatment is really easy.

It's just four tablets taken all at once before any damage is done.

The good news is that it can be tested for, but you have to come for the test.

I'd rather go and get checked out than give it to somebody else

and then it'd be more embarrassing to get tested, for them as well.

I didn't like the sound of it so I thought,

"I may as well get tested for it for safe measures and that."

I didn't want to give my girlfriend it.

Most people don't know they have it.

The trouble is, you have chlamydia, change partners,

pass it on to your next partner,

you don't realise you've got it, they don't realise they've got it,

so chlamydia can travel around quite quickly.

It does not spread if condoms are used.

But a lot of sex now is unprotected in terms of condoms,

so chlamydia can spread and it spreads easily.

We give them a pack of condoms

and inside we have a leaflet on how to use condoms,

which we put in every packet.

And we have a mixture of different condoms,

flavoured and just normal ones as well,

so we've got a bit of everything for everybody.

We do try and prevent it.

We do a lot of workshops as well in youth centres,

and particularly around screening

so young people aren't scared about what the process is

so they know what it will be before they go for it.

I went to the doctor's and I had to pee in this bottle

and then they sent me a letter back saying that I hadn't got it.

Testing is just a wee in a pot

and for girls it's a self-taken swab as an option as well.

It's nothing to be embarrassed about, it's just something that happens,

so you just have to get tested and have awareness about it.

I had unprotected sex and I thought it was the best thing to do.

It was all OK, luckily.

There's many places you can get tested for chlamydia

and it can be anything from going to your GP...

You can go to any family planning clinic, a sexual health clinic,

and in places like Conifer House and some of the clubs around town

they have effectively dustbins full of self-testing kits,

where all you do is you walk in, pick up the kit, walk out.

The instructions are on the bits of paper, what to do.

Post the urine sample back in and we will contact you with the result.

And that chain has to be broken.

Think about it. You don't appreciate having chlamydia,

so it's only fair that you prevent other people from getting it.

Better to be sure that you haven't got it than run around without knowing.