Vaccine Schedule Calculator

ANA›Life Services Authority›National Calculator Authority›Vaccine Schedule Calculator

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Vaccine Schedule Calculator

Enter your date of birth to see the CDC-recommended vaccine schedule and check which vaccines may be due or overdue.

Date of Birth

Patient Category

Child (0–18 years) Adult (19+ years) Pregnant Adult

Calculate Schedule

(function(){ // Set max date to today document.getElementById('vac-dob').max = new Date().toISOString().split('T')[0];

window.vacCalc = function(){ var dobVal = document.getElementById('vac-dob').value; var category = document.getElementById('vac-category').value; var resultDiv = document.getElementById('vac-result');

if(!dobVal){ resultDiv.style.display='block'; resultDiv.innerHTML='Please enter a valid date of birth.'; return; }

var dob = new Date(dobVal); var today = new Date(); today.setHours(0,0,0,0);

if(dob > today){ resultDiv.style.display='block'; resultDiv.innerHTML='Date of birth cannot be in the future.'; return; }

// Calculate age in years, months, weeks var ageMs = today - dob; var ageDays = Math.floor(ageMs / 86400000); var ageWeeks = Math.floor(ageDays / 7); var ageMonths = (today.getFullYear() - dob.getFullYear()) * 12 + (today.getMonth() - dob.getMonth()); if(today.getDate() = dueDate) return 'overdue'; var soon = new Date(today); soon.setDate(soon.getDate()+30); if(dueDate Overdue'; if(s==='due-soon') return 'Due Soon'; return 'Upcoming'; }

// ---- VACCINE SCHEDULES ---- var vaccines = [];

if(category === 'child'){ // Birth vaccines.push({name:'Hepatitis B (HepB) – Dose 1', due: addMonths(dob,0), note:'At birth'}); vaccines.push({name:'Hepatitis B (HepB) – Dose 2', due: addMonths(dob,1), note:'1–2 months'}); vaccines.push({name:'Hepatitis B (HepB) – Dose 3', due: addMonths(dob,6), note:'6–18 months'}); // 2 months vaccines.push({name:'DTaP – Dose 1', due: addMonths(dob,2), note:'2 months'}); vaccines.push({name:'Hib – Dose 1', due: addMonths(dob,2), note:'2 months'}); vaccines.push({name:'IPV – Dose 1', due: addMonths(dob,2), note:'2 months'}); vaccines.push({name:'PCV15/PCV20 – Dose 1', due: addMonths(dob,2), note:'2 months'}); vaccines.push({name:'RV – Dose 1', due: addMonths(dob,2), note:'2 months'}); // 4 months vaccines.push({name:'DTaP – Dose 2', due: addMonths(dob,4), note:'4 months'}); vaccines.push({name:'Hib – Dose 2', due: addMonths(dob,4), note:'4 months'}); vaccines.push({name:'IPV – Dose 2', due: addMonths(dob,4), note:'4 months'}); vaccines.push({name:'PCV15/PCV20 – Dose 2', due: addMonths(dob,4), note:'4 months'}); vaccines.push({name:'RV – Dose 2', due: addMonths(dob,4), note:'4 months'}); // 6 months vaccines.push({name:'DTaP – Dose 3', due: addMonths(dob,6), note:'6 months'}); vaccines.push({name:'Hib – Dose 3', due: addMonths(dob,6), note:'6 months'}); vaccines.push({name:'PCV15/PCV20 – Dose 3', due: addMonths(dob,6), note:'6 months'}); vaccines.push({name:'Influenza (annual)', due: addMonths(dob,6), note:'6 months+, annually'}); vaccines.push({name:'COVID-19 (primary series)', due: addMonths(dob,6), note:'6 months+'}); // 12–15 months vaccines.push({name:'MMR – Dose 1', due: addMonths(dob,12), note:'12–15 months'}); vaccines.push({name:'Varicella – Dose 1', due: addMonths(dob,12), note:'12–15 months'}); vaccines.push({name:'Hib – Dose 4', due: addMonths(dob,12), note:'12–15 months'}); vaccines.push({name:'PCV15/PCV20 – Dose 4', due: addMonths(dob,12), note:'12–15 months'}); vaccines.push({name:'HepA – Dose 1', due: addMonths(dob,12), note:'12–23 months'}); vaccines.push({name:'HepA – Dose 2', due: addMonths(dob,18), note:'6–18 months after Dose 1'}); // 15–18 months vaccines.push({name:'DTaP – Dose 4', due: addMonths(dob,15), note:'15–18 months'}); // 4–6 years vaccines.push({name:'DTaP – Dose 5', due: addYears(dob,4), note:'4–6 years'}); vaccines.push({name:'IPV – Dose 4', due: addYears(dob,4), note:'4–6 years'}); vaccines.push({name:'MMR – Dose 2', due: addYears(dob,4), note:'4–6 years'}); vaccines.push({name:'Varicella – Dose 2', due: addYears(dob,4), note:'4–6 years'}); // 11–12 years vaccines.push({name:'Tdap (booster)', due: addYears(dob,11), note:'11–12 years'}); vaccines.push({name:'HPV – Dose 1', due: addYears(dob,11), note:'11–12 years (2-dose series if started before 15)'}); vaccines.push({name:'HPV – Dose 2', due: addYears(dob,11.5), note:'6–12 months after Dose 1'}); vaccines.push({name:'MenACWY – Dose 1', due: addYears(dob,11), note:'11–12 years'}); vaccines.push({name:'MenACWY – Dose 2 (booster)', due: addYears(dob,16), note:'16 years'}); vaccines.push({name:'MenB (if indicated)', due: addYears(dob,16), note:'16–18 years, shared decision'}); }

else if(category === 'adult'){ vaccines.push({name:'Influenza (annual)', due: new Date(today.getFullYear(), 8, 1), note:'Every fall (September–October)'}); vaccines.push({name:'COVID-19 (updated booster)', due: new Date(today.getFullYear(), 8, 1), note:'Annually per CDC guidance'}); vaccines.push({name:'Tdap or Td (booster)', due: addYears(dob, ageYears - (ageYears % 10) + 10), note:'Every 10 years; Tdap once if not received as adult'}); if(ageYears >= 19 && ageYears = 27 && ageYears = 50){ vaccines.push({name:'Shingrix (RZV) – Dose 1', due: today, note:'Age 50+, 2-dose series'}); vaccines.push({name:'Shingrix (RZV) – Dose 2', due: today, note:'2–6 months after Dose 1'}); } if(ageYears >= 65){ vaccines.push({name:'PCV15 or PCV20 (pneumococcal)', due: today, note:'Age 65+; PCV15 followed by PPSV23, or PCV20 alone'}); vaccines.push({name:'PPSV23 (if PCV15 used)', due: today, note:'1 year after PCV15'}); vaccines.push({name:'RSV vaccine (Abrysvo/Mresvia)', due: today, note:'Age 60+, single dose, shared decision'}); } vaccines.push({name:'MenACWY (if at risk)', due: today, note:'Asplenia, complement deficiency, travel, college freshmen in dorms'}); vaccines.push({name:'MenB (if at risk)', due: today, note:'Asplenia, complement deficiency, or outbreak'}); }

else if(category === 'pregnant'){ vaccines.push({name:'Influenza (inactivated, IIV)', due: today, note:'Any trimester; recommended during flu season'}); vaccines.push({name:'Tdap', due: addMonths(dob, ageMonths - 3), note:'27–36 weeks gestation, each pregnancy'}); vaccines.push({name:'COVID-19 (updated booster)', due: today, note:'Recommended during pregnancy'}); vaccines.push({name:'RSV vaccine (Abrysvo)', due: today, note:'32–36 weeks gestation (September–January)'}); vaccines.push({name:'HepB (if not immune)', due: today, note:'Safe during pregnancy if at risk'}); vaccines.push({name:'HepA (if at risk)', due: today, note:'Safe during pregnancy if indicated'}); vaccines.push({name:'MMR – AVOID during pregnancy', due: today, note:'Contraindicated; administer postpartum'}); vaccines.push({name:'Varicella – AVOID during pregnancy', due: today, note:'Contraindicated; administer postpartum'}); }

// Filter to relevant vaccines based on age var relevant = vaccines.filter(function(v){ if(category==='child'){ // Only show vaccines due within age range return v.due '+v.name+''+fmt(v.due)+''+v.note+''+badge(s)+''; }).join(''); }

var ageDisplay = ageYears > 0
? ageYears + ' year' + (ageYears!==1?'s':'') + (ageMonths%12>0 ? ', '+(ageMonths%12)+' month'+(ageMonths%12!==1?'s':'') : '')
(ageMonths > 0 ? ageMonths+' month'+(ageMonths!==1?'s':'') : ageDays+' day'+(ageDays!==1?'s':''));

var html = '### Vaccine Schedule for Age: '+ageDisplay+' '; html += 'Category: '+category.charAt(0).toUpperCase()+category.slice(1)+'  |  DOB: '+fmt(dob)+'

';

if(overdueList.length===0 && dueSoonList.length===0 && upcomingList.length===0){ html += 'No vaccine data available for this profile. Please consult your healthcare provider.

'; } else { html += ''; html += 'VaccineDue DateNotesStatus'; if(overdueList.length>0){ html += '⚠ Overdue ('+overdueList.length+')'; html += renderRows(overdueList); } if(dueSoonList.length>0){ html += '⏰ Due Within 30 Days ('+dueSoonList.length+')'; html += renderRows(dueSoonList); } if(upcomingList.length>0){ html += '✓ Upcoming ('+upcomingList.length+')'; html += renderRows(upcomingList); } html += ''; }

html += '⚕ This tool provides general CDC schedule guidance only. Always consult a licensed healthcare provider for personalized recommendations.

';

resultDiv.style.display='block'; resultDiv.innerHTML=html; }; })();

#### Schedule Logic

Vaccine due dates are calculated by adding the CDC-recommended age offset to the date of birth:

#### Assumptions & References

More Calculators

References

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