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Most commonly it is spread during childbirth when the mother is infected. When we’re infected as newborns or young children, our immature immune systems don’t notice or fight the virus and it travels to our liver and begins reproducing.

With no opposition from our immune systems, a hepatitis B infection can continue for years.

The specific test that indicates if you are infected is the hepatitis B surface antigen (HBs Ag) test.

This antigen covers the surface of the virus and usually there are lots of HBs Ag in your blood when you’re infected.

Immunization with the hepatitis B vaccine and hepatitis B immune globulin (HBIG), if available, within 12 to 24 hours of birth can break this mother-to-child infection cycle, but the birth vaccine dose and often HBIG is not always available around the world. When we’re infected with HBV as healthy adults, about 90 percent of us are able to get rid of the infection within six months.

It can take up to six months for our immune systems to generate antibodies and eradicate the infection in our liver.

A-level translation units by me and Gianfranco Conti on TES Click on the resource category for quick scrolling Grammar exercises Translations England and Wales exam preparation Texts with exercises Video listening Discussions Cultural topics See the Y10-11 page for more grammar exercises which may be useful for A-level revision. Working out gender Present tense irregulars crossword (1) Present tense irregulars crossword (2) Time expressions Using infinitives Tense revision - Eng-French translation More verb tenses Negatives General grammar revision P. A2 level grammar revision sentences to translate (harder ones) Passive SUBJUNCTIVE Subjunctive lesson plan by Sarah Shaw (Aspirelanguages) Resources for the above lesson plan (some cutting out needed for student cards) Part 1: Summary of triggers for the subjunctive (Power Point slide) Conjunctions (Powwer Point slide) Part 1 and 3-1.

AS grammar booklet This booklet of 14 cloze and multi-choice exercises replaces all the separate sheets which were displayed here separately. Triggers and Conjugated Verbs Part 4: Infinitive verbs Part 5: Reading activity Present subjunctive - regular Present subjunctive - irregular Je veux que.. Subjunctive oral/written drills Subjunctive oral/written drills (2) Subjunctive or not?

A person with a new hepatitis B infection may not have any symptoms, or they may not be very notable. About 70 percent of people newly-infected with hepatitis B never experience symptoms.Simple activity sheets designed for students to be able to identify and name different specialised plant and animal cells, label the parts of the cells, and to link their adaptations to their functions.a handbook by Steve Smith and Gianfranco Conti is available from Amazon. agreements Prepositions Perfect and imperfect tenses together Depuis, pendant, pour, il y a SI clauses SI clauses crossword More tense practice Passive voice Passive voice (with faits divers) Direct and Indirect Speech Relative pronouns Auquel, duquel etc Prepositions Conditional Rough guide to modal verbs A2 level grammar revision sentences to translate Answers to the above sentences.(AS) TV and children's behaviour (AS) Pros and cons of TV (AS) Jigsaw reading on above - cut out and re-order (AS) Gap fill for above TV series or films - which do you prefer?(AS) Binge watching (AS) Forum reviews of TV series Les Revenants (AS) TV and childhood obesity (AS) Work-related stress (AS) Why are girls given better grades than boys?

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