Table 2.
Most common aeroallergens by age group.
| 2-3-year-old children | Pollen | Positive percent of 16 children |
|---|---|---|
| Most common weeds | Russian thistle | 60% |
| Pigweed | 58% | |
|
| ||
| Most common grasses | Timothy | 45% |
| Alfalfa | 56% | |
| Brome | 40% | |
| Johnson | 40% | |
|
| ||
| Most common trees | Walnut | 75% |
| Olive | 55% | |
| Mountain cedar | 50% | |
| Willow | 50% | |
| Sweet gum | 33% | |
| Mulberry | 43% | |
| Pine | 25% | |
|
| ||
| 4-5-year-old children | Pollen | Positive percent of 51 children |
|
| ||
| Most common weeds | Russian thistle | 54% |
| Pigweed | 46% | |
| Sagebrush | 43% | |
|
| ||
| Most common grasses | Timothy | 42% |
| Johnson | 44% | |
| Alfalfa | 37% | |
|
| ||
| Most common trees | Olive | 42% |
| Maple | 39% | |
| Willow | 31% | |
| Sweet gum | 23% | |
| Mulberry | 29% | |
| Pine | 19% | |
|
| ||
| 6-7-year-old children | Pollen | Positive percent of 56 children |
|
| ||
| Most common weeds | Russian thistle | 68% |
| Pigweed | 61% | |
| Sagebrush | 49% | |
|
| ||
| Most common grasses | Saltgrass | 58% |
| Timothy | 48% | |
| Bermuda | 45% | |
| Johnson | 45% | |
|
| ||
| Most common trees | Willow | 39% |
| Sweet gum | 32% | |
| Mulberry | 36% | |